Tory Lanez was arrested on Sunday morning (July 12) following an argument that led to police finding a gun in his car, Billboard can confirm.According to TMZ, who first reported the news, police responded to a call of a disturbance outside of a Hollywood Hills home, where witnesses said people were arguing in an SUV before shots were fired in the air and the vehicle left the scene.A spokesperson for the Los Angeles Police Department confirmed that Lanez (born Daystar Peterson) was arrested for