A man is in critical condition at University Hospital, after being struck by a vehicle on the city's west side overnight.


  Police tell Newsradio 1200 WOAI's Morgan Montalvo that the victim was crossing the street at North Zarzamora and Ruiz, when an oncoming automobile hit him, and kept going.


  At least one person witnessed what is being called a hit and run, and police are tracking down the vehicle.