Police arrested 18 year old Tobias Paiva last night for an alleged drive by shooting on Humboldt Avenue late last month. Investigators say Paiva jumped out of a pickup that night and was brandishing a gun. He yelled gang related slurs at a group of people standing outside. A few hours later there was a report of a drive by shooting at the same residence. Paiva is charged with assault with a deadly weapon, making criminal threats and committing crimes for the benefit of a street gang.