Investigators say officers were called to a home Wednesday evening after a woman said her husband was suicidal and had access to guns.
He had worked as a civilian employee of the United Nations.
The man had fallen asleep and emerged overnight to surrender after police blocked off the area and brought an armoured vehicle onto the driveway to get his attention with lights and sirens.
A number of rifles were taken from the home but charges are not expected. (CHED)