An emergency response chief says one person is dead and six are injured after Friday's collapse of a four-story building in Nigeria's capital.

Mustapha Maihaja with the National Emergency Management Agency says one of the injured is in critical condition after the shopping complex that was under construction collapsed in Abuja.

The spokesman for the agency says rescue efforts have ended. Many people were rescued by bystanders.

Nigeria's acting President Yemi Osinbajo, left, visits the site of a collapsed under construction building in Abuja, Nigeria, Friday, Aug 17, 2018. Nigerian rescue officials say they are working to pull out a number of people trapped under the rubble of a collapsed shopping complex that was under construction in the capital, Abuja. (AP PhotoOlamikan Gbemiga )

Nigeria's acting President Yemi Osinbajo, left, visits the site of a collapsed under construction building in Abuja, Nigeria, Friday, Aug 17, 2018. Nigerian rescue officials say they are working to pull out a number of people trapped under the rubble of a collapsed shopping complex that was under construction in the capital, Abuja. (AP PhotoOlamikan Gbemiga )

Building collapses are not uncommon in Nigeria, a West African powerhouse where corruption is rampant and infrastructure is often poor.

Rescue workers search for trapped people under the rubble of a collapsed shopping complex that was under construction in Abuja, Nigeria, Friday, Aug 17, 2018. (AP PhotoOlamikan Gbemiga )

Rescue workers search for trapped people under the rubble of a collapsed shopping complex that was under construction in Abuja, Nigeria, Friday, Aug 17, 2018. (AP PhotoOlamikan Gbemiga )

Rescue workers search for people who may be trapped under the rubble of a collapsed under construction building in Abuja Nigeria, Friday, Aug. 17, 2018.  Nigerian rescue officials say they are working to pull out a number of people trapped under the rubble of a collapsed shopping complex that was under construction in the capital, Abuja. (AP PhotoOlamikan Gbemiga )

Rescue workers search for people who may be trapped under the rubble of a collapsed under construction building in Abuja Nigeria, Friday, Aug. 17, 2018. Nigerian rescue officials say they are working to pull out a number of people trapped under the rubble of a collapsed shopping complex that was under construction in the capital, Abuja. (AP PhotoOlamikan Gbemiga )

Rescue workers search for people who may be trapped under the rubble of a collapsed under construction building in Abuja, Nigeria, Friday, Aug. 17, 2018. Nigerian rescue officials say they are working to pull out a number of people trapped under the rubble of a collapsed shopping complex that was under construction in the capital, Abuja. (AP PhotoOlamikan Gbemiga )

Rescue workers search for people who may be trapped under the rubble of a collapsed under construction building in Abuja, Nigeria, Friday, Aug. 17, 2018. Nigerian rescue officials say they are working to pull out a number of people trapped under the rubble of a collapsed shopping complex that was under construction in the capital, Abuja. (AP PhotoOlamikan Gbemiga )