Two men impersonating police officers were shot and killed while exchanging gunfire with homeowners, Texas police say.

The suspects' ski masks, lack of marked police vehicles, and absence of emergency lighting contradicted standard police protocol for serving warrants.

Officers were driving in the left lane to make a left turn at Gratiot Avenue when a black pickup struck their car, police said.

Injuries to both officers are not considered to be life-threatening, police said. The crash happened around 6:30 p.m. on Saturday, Aug. 23, near Gratiot Avenue and Lappin Street. Jasmin Barmore, media director for the Detroit Police Department,