HOUSTON --Detectives are searching for a man who shot at a park ranger at a north Houston park. Police say the shooting happened around 9pm Sunday in the 12000 block of Aldine Westfield as the ranger was trying to close a park and lock its gates. According to investigators, the man approached the ranger and demanded that he turn his car's headlights off. When the ranger explained he had the lights on to notify others that the park was closing, the man became enraged and started yelling and cursing at the ranger. Detectives say the man then went to a 1997-1999 gold Toyota Camry, pulled out a gun and started shooting at the ranger's vehicle. The ranger was struck by a possible bullet fragment and injured his right leg. He was treated at a nearby location and released. The suspect is described as a Hispanic man between the ages of 18 and 25 and is about 5-foot-9. He weighs around 160 pounds and had a crew cut hairstyle. He was wearing black shorts and a black shirt. He is wanted on a charge of aggravated assault with a deadly weapon.