SYDNEY (AP) — A man who marched into a Sydney law office with his daughter and said he had a bomb in his backpack was taken into custody Tuesday after a tense, 12-hour standoff with police.

The man’s 12-year-old daughter was released and reunited with her family, New South Wales police said. She was distressed, but otherwise unharmed, police said.

Police Assistant Commissioner Denis Clifford said bomb technicians were examining the backpack to see whether any explosive devices were in it.

A police tactical team forced its way into the office after negotiations with the man began to crumble, Clifford said.

“Towards the latter part of the time we’ve been here, those negotiations have started to break down and then deteriorate to a stage where police have taken action to break into the premises and take a 52-year-old man into custody,” Clifford said. “He’s currently assisting police with their ongoing inquires.”

Police have not released the man’s name or described the series of demands he issued. He is expected to appear in court on Wednesday.

The drama began yesterday morning, when the man walked into the reception area of the lawyers’ offices. Employee Betty Hor said he approached her and asked to see someone whom Hor had never heard of.