A UC Berkeley student fell to his death during a concert in Oakland on Friday night.

According to the San Jose Mercury News, Zachary Bradley fell more than 20 feet from an elevated and restricted area behind the stage while attending Spookfest 2014, a concert held at Oracle Arena. He was 20 years old.

His friends told police they had last seen him at 7:30 p.m. Event security found him about 11:45 p.m. He was pronounced dead at the scene by Oracle medical staff, according to the Oakland Police Department.

Bradley was from Arizona and a member of campus fraternity Theta Delta Chi.

“Goodbye my beautiful boy,” wrote his father, Michael Bradley, on Bradley’s Facebook page. “I love you.”

According to the Mercury News, Bradley is survived by his father, mother and two brothers.

Senior staff writer Kimberly Veklerov contributed to this report.

Sophie Ho is the executive news editor. Contact her at [email protected] and follow her on Twitter @sophanho.