police officer who fired his gun after barricading himself in a 24-hour gym

MONTREAL (CBC) - A Montreal police officer who fired his gun after barricading himself in a 24-hour gym was arrested overnight Monday.

Witnesses say an officer entered the Pro-Gym in Hochelaga-Maisonneuve wearing his uniform and weapon at about midnight Monday.

He started yelling at people and talking to himself, and ordered a bottle of water on credit.

Then he took off his bullet-proof vest and put it back on inside out, and started running on a treadmill.

When police were called to the gym, the officer went into an upstairs office, and refused to come out for several hours.

He fired about six shots during the standoff, but no one was hurt, said Const. Raphaël Bergeron.

A 33-year-old man was taken into custody just after 4 a.m. and escorted out of the gym through a back door.

He was taken to hospital for examination, but police aren't releasing any more details at this time, Bergeron said.

He will undergo a psychiatric evaluation.