HOUSTON -

A Precinct 6 Deputy Constable was killed in what police are calling a drunk driving accident on the Gulf Freeway in southeast Houston.

Around 2:17 a.m., a grey Dodge pickup was heading inbound on I-45 at a high rate of speed.  According to reports, the driver lost control, and the truck slammed into the retainer wall. 

Police said both the driver and passenger were thrown from the truck.  Apparently one of those victims fell over the side of the retainer wall to his death below the freeway. 

Police confirmed he was an off-duty Deputy Constable and 34 years old. His identity is pending notification to family members by the Harris County Institute of Forensic Sciences. 

The second person -- a 22-year-old man -- riding in the truck sustained major injuries but was taken to the hospital and is expected to survive.

At this point in the investigation, police said it is not clear who was driving at the time of the crash; however, they admitted there were signs of alcohol.

If investigators determine the victim in the hospital was driving drunk when the accident happened, he could face intoxication manslaughter charges.