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

The suspect hit a civilian’s pickup, and the police car collided with the suspect’s vehicle and then hit a tree, authorities said.

Police are chasing a suspect in a stolen Infiniti sedan in Los Angeles County Friday night. The male driver sped on surface streets and ignored traffic signals before he entered the 105 Freeway, then transitioned to the 110 Freeway.

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,