KUALA LUMPUR, Sept. 5 -- A 48-year-old man believed to be suffering from mental health problems was arrested yesterday after climbing onto the roof of a house in Semenyih while armed with a knife, authorities said.

Kajang District Police Chief, Assistant Commissioner Naazron Abdul Yusof, said police were alerted to the incident by a member of the public at 8:50pm.

The Malaysian Fire and Rescue Department also assisted in efforts to secure the man.

"After nearly four hours of negotiation, the suspect, wearing only shorts, was safely detained at the scene, and the knife was recovered," Naazron said in a statement.

Preliminary checks indicated that the man was not a local resident of Semenyih and had a history of mental health issues. He...