PEARLAND, Texas (KTRK) -- An hours-long SWAT standoff in Pearland came to an end after the suspect was found dead of an apparently self-inflicted injury, according to authorities.Pearland police said they received 911 calls about a man firing a gun around the 3300 block of Orchard Mill.The 36-year-old suspect is believed to have been upset with family members and allegedly drove them out of the house with a weapon.A SWAT team was called to the house, and negotiations lasted hours before the suspect was found dead.The suspect's identity has not yet been released.