Here's a look at the timeline of events in a series of killings that culminated in a Jan. 20 highways shootout that killed a Border Patrol officer in Vermont. It is based on Associated Press interviews and a review of police reports, court records and online postings:
Jack LaSota, who uses feminine pronouns, a computer programmer and transgender woman living in the San Francisco Bay area, starts writing a blog under the online persona “Ziz” with complex and sometimes rambling theories about technology, gender identity and human cognition. She gets involved in the rationalist movement, a community that seeks to understand human cognition and is concerned with the potential dangers of artificial intelligence.
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FBI agents search a neighborhood in Chapel Hill, North Carolina on Wednesday, Feb. 5, 2025., where Teresa Youngblut and Felix Bauckholt, who were involved in the shooting death of a U.S. Border Patrol agent in Vermont, had been renting homes, their landlord told The Associated Press. (WRAL-TV via AP)
In this combination of undated photos provided by the Pennsylvania State Police, Richard Zajko, left, and his wife Rita Zajko, who police say were shot to death in their home in suburban Philadelphia on Dec. 31, 2022, are shown. (Pennsylvania State Police via AP)
Flowers sit outside the property where San Francisco Bay Area prosecutors say Maximilian Snyder killed landlord Curtis Lind in Vallejo, California, Friday, Jan. 31, 2025. (AP Photo/Janie Har)
FILE- Cars are backed up at the US-Canada border in Stanstead, Quebec, after a shooting involving a U.S. Border Patrol agent in Coventry, Vt., on Jan. 20, 2025. (AP Photo/Chloe Jones, File)
FILE - This Jan. 29, 2025 photo shows a Chester Heights, Pa., home, the scene of the 2022 killing of Richard and Rita Zajko, (AP Photo/Matt Rourke)
FILE - This image taken from video provided by WCAX shows police cars closing off a road after a shooting involving a U.S. Border Patrol agent on Interstate 91 near Coventry, Vt., on Jan. 20, 2025. (WCAX via AP, File)
In this Jan., 2023 booking photo provided by the Delaware County, Pennsylvania, District Attorney's Office, Jack LaSota refused to speak and kept her eyes closed while being photographed after being detained in a hotel in suburban Pennsylvania on Jan. 23, 2023. (Delaware County, Pennsylvania, District Attorney's Office via AP)
Flowers sit outside the property where San Francisco Bay Area prosecutors say Maximilian Snyder killed landlord Curtis Lind in Vallejo, California, Friday, Jan. 31, 2025. (AP Photo/Janie Har)
Maximilian Snyder, who is charged with allegedly killing an 82-year-old Vallejo landlord to prevent him from testifying in a murder case against his former tenants, walks into court for arraignment Thursday, Feb 6, 2025, in Fairfield, Calf. (AP Photo/Terry Chea)
FILE - In this undated and unknown location photo released by the Department of Homeland Security shows Border Patrol Agent David Maland posing with a service dog. (Department of Homeland Security via AP, File)
Maximilian Snyder appears in court for arraignment on Thursday in Fairfield, Calif. Snyder is charged with allegedly killing an 82-year-old Vallejo landlord to prevent him from testifying in a murder case against his former tenants. Snyder asked for additional weeks to find proper counsel, moving the case back to Vallejo. (Chris Riley/Times-Herald)/The Times-Herald via AP)
FBI agents search a neighborhood in Chapel Hill, North Carolina on Wednesday, Feb. 5, 2025, where Teresa Youngblut and Felix Bauckholt, who were involved in the shooting death of a U.S. Border Patrol agent in Vermont, had been renting homes in the neighborhood, their landlord told The Associated Press. (WRAL-TV via AP)
Maximilian Snyder, who is charged with allegedly killing an 82-year-old Vallejo landlord to prevent him from testifying in a murder case against his former tenants, walks into court with his hands up for arraignment Thursday, Feb 6, 2025, in Fairfield, Calf. (Chris Riley, Times-Herald via AP)/The Times-Herald via AP)
FILE - Law enforcement follow a hearse carrying fallen border patrol agent David Maland from the UVM Medical Center morgue to a funeral home in Burlington, Vt., Thursday, Jan. 23, 2025. (WCAX via AP, File)
FBI agents search a neighborhood in Chapel Hill, North Carolina on Wednesday, Feb. 5, 2025 where Teresa Youngblut and Felix Bauckholt, who were involved in the shooting death of a U.S. Border Patrol agent in Vermont, had been renting homes in the neighborhood, their landlord told The Associated Press. (WRAL-TV via AP)
LaSota attends programs organized by rationalist groups but splits from them after they reject her theory that the two hemispheres of the brain can hold separate values and genders.
LaSota and three others — Emma Borhanian, Gwen Danielson and Alexander Leatham — are arrested during what they called a protest against sexual misconduct within rationalist organizations.
The U.S. Coast Guard responds to a report that LaSota had fallen out of a boat in San Francisco Bay. No body is found. An obituary is published.
Curtis Lind goes to court seeking to evict LaSota, Borhanian, Leatham and others who have been living in vans and box trucks on his property in Vallejo, California, for nonpayment of rent. On Nov. 15, two days before the eviction deadline, Lind is impaled with a sword and partially blinded in an attack during which he shoots and kills Borhanian.
Concluding that Lind acted in self-defense, officials charge Leatham and Suri Dao with murder. LaSota is not charged but police report having contact with her at the scene.
Rita and Richard Zajko are shot and killed in their home in Chester Heights, Pennsylvania, on New Year's Eve. A neighbor's doorbell camera captures audio and video of a car pulling up to their home, a voice shouting “Mom!” and another voice exclaiming, “Oh my God! Oh, God, God!”
Police question the Zajkos' daughter, Michelle, at her home in Vermont. A few weeks later, officers briefly take her into custody at a Pennsylvania hotel, but release her without charges. LaSota, staying at the same hotel, is arrested and charged with obstructing the homicide investigation and disorderly conduct.
Felix Bauckholt, also referred to in court documents as Ophelia, begins renting half a duplex in Chapel Hill, North Carolina.
Teresa Youngblut's parents report her missing in Seattle after she sends her mother emails saying she has moved in with a friend and changed her number.
Youngblut and Maximilian Snyder apply for a marriage license in Washington state. Also this month, Youngblut begins renting a condo near Bauckholt's in North Carolina.
Youngblut and Bauckholt check into a hotel in Lyndonville, Vermont, on Jan. 14. Investigators put the pair under surveillance after a hotel worker reports concerns about their all-black tactical clothing and the gun Youngblut was carrying.
On Jan. 17, Lind, the landlord in California is killed. Snyder is charged with murder, and prosecutors allege he was trying to prevent Lind from testifying against his earlier attackers.
On Jan. 20, U.S. Border Patrol officers pull Youngblut and Bauckholt over on Interstate 91 in Coventry, Vermont. Agent David Maland and Bauckholt are killed in a shootout. Youngblut, who is wounded, is charged with firearms charges.
The FBI searches the Chapel Hill property where a landlord says Youngblut, Bauckholt and LaSota had been living earlier this winter.
FBI agents search a neighborhood in Chapel Hill, North Carolina on Wednesday, Feb. 5, 2025., where Teresa Youngblut and Felix Bauckholt, who were involved in the shooting death of a U.S. Border Patrol agent in Vermont, had been renting homes, their landlord told The Associated Press. (WRAL-TV via AP)
In this combination of undated photos provided by the Pennsylvania State Police, Richard Zajko, left, and his wife Rita Zajko, who police say were shot to death in their home in suburban Philadelphia on Dec. 31, 2022, are shown. (Pennsylvania State Police via AP)
Flowers sit outside the property where San Francisco Bay Area prosecutors say Maximilian Snyder killed landlord Curtis Lind in Vallejo, California, Friday, Jan. 31, 2025. (AP Photo/Janie Har)
FILE- Cars are backed up at the US-Canada border in Stanstead, Quebec, after a shooting involving a U.S. Border Patrol agent in Coventry, Vt., on Jan. 20, 2025. (AP Photo/Chloe Jones, File)
FILE - This Jan. 29, 2025 photo shows a Chester Heights, Pa., home, the scene of the 2022 killing of Richard and Rita Zajko, (AP Photo/Matt Rourke)
FILE - This image taken from video provided by WCAX shows police cars closing off a road after a shooting involving a U.S. Border Patrol agent on Interstate 91 near Coventry, Vt., on Jan. 20, 2025. (WCAX via AP, File)
In this Jan., 2023 booking photo provided by the Delaware County, Pennsylvania, District Attorney's Office, Jack LaSota refused to speak and kept her eyes closed while being photographed after being detained in a hotel in suburban Pennsylvania on Jan. 23, 2023. (Delaware County, Pennsylvania, District Attorney's Office via AP)
Flowers sit outside the property where San Francisco Bay Area prosecutors say Maximilian Snyder killed landlord Curtis Lind in Vallejo, California, Friday, Jan. 31, 2025. (AP Photo/Janie Har)
Maximilian Snyder, who is charged with allegedly killing an 82-year-old Vallejo landlord to prevent him from testifying in a murder case against his former tenants, walks into court for arraignment Thursday, Feb 6, 2025, in Fairfield, Calf. (AP Photo/Terry Chea)
FILE - In this undated and unknown location photo released by the Department of Homeland Security shows Border Patrol Agent David Maland posing with a service dog. (Department of Homeland Security via AP, File)
Maximilian Snyder appears in court for arraignment on Thursday in Fairfield, Calif. Snyder is charged with allegedly killing an 82-year-old Vallejo landlord to prevent him from testifying in a murder case against his former tenants. Snyder asked for additional weeks to find proper counsel, moving the case back to Vallejo. (Chris Riley/Times-Herald)/The Times-Herald via AP)
FBI agents search a neighborhood in Chapel Hill, North Carolina on Wednesday, Feb. 5, 2025, where Teresa Youngblut and Felix Bauckholt, who were involved in the shooting death of a U.S. Border Patrol agent in Vermont, had been renting homes in the neighborhood, their landlord told The Associated Press. (WRAL-TV via AP)
Maximilian Snyder, who is charged with allegedly killing an 82-year-old Vallejo landlord to prevent him from testifying in a murder case against his former tenants, walks into court with his hands up for arraignment Thursday, Feb 6, 2025, in Fairfield, Calf. (Chris Riley, Times-Herald via AP)/The Times-Herald via AP)
FILE - Law enforcement follow a hearse carrying fallen border patrol agent David Maland from the UVM Medical Center morgue to a funeral home in Burlington, Vt., Thursday, Jan. 23, 2025. (WCAX via AP, File)
FBI agents search a neighborhood in Chapel Hill, North Carolina on Wednesday, Feb. 5, 2025 where Teresa Youngblut and Felix Bauckholt, who were involved in the shooting death of a U.S. Border Patrol agent in Vermont, had been renting homes in the neighborhood, their landlord told The Associated Press. (WRAL-TV via AP)
