Manila, Philippines ? Huge blasts at a suburban Manila police ammunition dump injured at least 107 people, damaged several buildings and homes and set off security jitters in a capital long wary of possible terror attacks or a coup, officials said. Police ruled out sabotage or terrorism.

An ammunition bunker filled with World War II vintage bombs and homemade explosives seized from Muslim militants and fishermen was obliterated by the explosions late Monday. The blasts also damaged nearby buildings and homes in and out of Camp Bagong Diwa, police said.

The blasts shattered glass windows and ripped off parts of the roof of a dormitory for drug addicts at a rehabilitation center, hurled about 30 parked vehicles away and damaged a gas station, witnesses said.

The injured included 101 patients at the drug rehabilitation clinic, four elite police officers and two civilians, police said.

The explosions, which investigators say were apparently touched off by lightning, initially raised concerns of foul play due to swirling coup rumors linked to the monthslong political crisis hounding President Gloria Macapagal Arroyo.