Originally Posted by http://www.latimes.com/news/local/la-me-cellcamera16nov16,0,4794591.story?coll=la-home-headlines

After repeated requests, the officer left and returned with campus police, who asked Tabatabainejad to leave "multiple times," according to a statement by the UCLA Police Department.

"He continued to refuse," the statement said. "As the officers attempted to escort him out, he went limp and continued to refuse to cooperate with officers or leave the building."

Witnesses disputed that account, saying that when campus police arrived, Tabatabainejad had begun to walk toward the door with his backpack. When an officer approached him and grabbed his arm, the witnesses said, Tabatabainejad told the officer to let go, yelling "Get off me" several times.