A crash in southwest Houston injured a police officer and four Gulf Coast Regional Blood Center workers early Monday.

A Houston Police Department patrol SUV collided with a blood center van on Holmes at Fannin.

The police officer's SUV burst into flames after the wreck, which shut down the intersection for several hours.

Ambulances took the officer and the blood center employees to the hospital with non-life threatening injuries. As of 11 a.m. the police officer and two of the four blood center workers were still in the hospital, however.

After the collision, the officer's SUV came to rest on nearby train tracks, but officials say a train was not involved in the incident.

As of 7:15 a.m. the investigation was still underway with the intersection blocked in all directions. The scene has since cleared.

Photos: HPD, blood bank van collide in SW Houston