A man who'd just left a Baytown store on his bike was shot dead by a gunman one witness says was waiting nearby in a truck.

Baytown police are investigating the homicide on South Pruett Street, and while they have not said much, that eyewitness account of what they say went down is troubling.

Here's what we know from police: The Baytown Police Department confirmed the shooting happened on South Pruett near West Main Steet.