University of California, San Francisco police have arrested the suspect in the slaying of the president of a Hells Angels chapter at a Nevada casino. UCSF Assistant Police Chief Paul Berlin says 53-year-old Ernesto Manuel Gonzalez was taken into custody after he was spotted by an officer just a block from campus police headquarters around 8:20 p.m. Thursday. Gonzalez was apparently in a parked 2011 Chevrolet Malibu. He is being held pending the arrival of police from Sparks, Nev., where he is accused of killing Jeffrey "Jethro" Pettigrew inside a casino on Sept. 23. Authorities say Gonzalez is an alleged member of the Vagos gang and shot the 51-year-old Pettigrew four times in the back. Pettigrew was the president of the San Jose chapter of the Hells Angels.