Gunman kills himself after double murder of his cousins on Detroit's east side

Three people are dead on Detroit's east side after a gunman shoots and kills two of his cousins - an adult victim and a teenager - before turning the gun on himself Monday afternoon.

The gunshot victims, 17-year-old teen, Jamil Thornton and Daniel Berry, 26, were brothers, according to Detroit police.  Thornton was killed at the scene, in the 2900 block of Bewick near Charlevoix while Berry was rushed to a nearby hospital where he died from his injuries

A witness told police the 29-year-old gunman opened fire inside the house on his family members and then shot at another residence. Nobody in the second residence was injured.

The gunman killed himself near Chandler Park and Conner, said DPD Deputy Chief Franklin Hayes.

"We have a very tragic situation - three lives lost," Hayes said.

Police say the family recently suffered another death. Police are still investigating.

A member of the family spoke to FOX 2 and said they didn't know what could have set off the gunman. 

Jamil Thornton, 17, left, Daniel Berry, 26.

Jamil Thornton, 17, left, Daniel Berry, 26.