Police arrested 22-year-old Abdul Walid Hamid of Hayward Wednesday evening after he reportedly robbed a man and scared others at Stoneridge Shopping Center.
He has been charged with battery, terrorist threats and grand theft.
According to reports, Hamid was yelling "Allah is power" and "Islam is great" while holding a pen in a fist over his head and witnesses said he had been shouting anti-Christian comments.
Lt. Mike Elerick said the man was not provoked and didn't threaten violence, but he committed robbery when he grabbed and broke a crucifix off a man's neck.
Coworkers told police that Hamid's actions were out of the ordinary and that he had worked at a kiosk near Starbucks for years.
Police also said they weren't aware of a prior criminal history for the man.
"We had multiple people calling 911," Elerick said. "One female was crouching down and hiding from him. He definitely scared quite a few people."
Elerick said much of the man's speech was similar to the loud scene of the Christian activists who frequent downtown Pleasanton. The big differences, however, is that Hamid was on private property and had physical contact with someone.
"Mall management has the option of making a citizen's arrest on anybody and asking someone to remove themselves for any reason," he said. "If there was no physical contact between Hamid and the customers, with just his actions alone the mall would have asked that he be removed."
Hamid was reportedly not cooperating and was arrested by force and taken to John George Hospital for a psychiatric evaluation. Police said the case will be forwarded to the District Attorney's office for review and possible charges.