Detroit’s police chief says a 28-year-old man arrested following the slaying of one Detroit police officer and wounding of another may be connected to several earlier shootings.

Chief James Craig says Friday that two men were shot Monday — one fatally — on the city’s east side. Two other people were wounded Sunday on the west side.

Those shootings preceded Wednesday’s fatal shooting of Officer Rasheen McClain and wounding of Officer Phillippe Batoum-Bisse after they responded to a home invasion.

Detroit Police Chief James Craig, second left, speaks to the media at Detroit Public Safety Headquarters, Thursday, November 21, 2019, about two officers who were shot Wednesday evening while responding to a home invasion on Detroit's west side. Officer Rasheen McLain was killed during the incident and another officer was wounded.  (David GuralnickDetroit News via AP)

Detroit Police Chief James Craig, second left, speaks to the media at Detroit Public Safety Headquarters, Thursday, November 21, 2019, about two officers who were shot Wednesday evening while responding to a home invasion on Detroit's west side. Officer Rasheen McLain was killed during the incident and another officer was wounded. (David GuralnickDetroit News via AP)

Craig said the 28-year-old also is believed to have fired shots two weeks ago at that home over a 16-year-old ex-girlfriend, but the appropriate follow-up wasn’t done by investigators and the man was not arrested. An internal investigation has been started.

No charges have yet been filed against the suspect in any of the shootings.