Man dies behind wheel of pickup truck

HOUSTON Around 5am, a witness noticed the man in a black Dodge pickup on the 4400 block of Pardee appeared to have medical trouble and called for help. When investigators arrived, they discovered the man was dead from "sharp force trauma."

Police say they believe the man was stabbed at a nearby location. The victim was able to get to his truck and drive off before he collapsed at the intersection, struck the stop sign and died.

Investigators are questioning neighbors who may have seen or heard anything. So far they have no suspects or motive for the killing.

The victim's identity has not been released.