An explosion at an ammunition warehouse near Cambodian Prime Minister Hun Sen's home injured at least two people Sunday night, according to police officers who asked not to be identified, according to dpa. Witnesses said the blast occurred early in the evening Sunday near Hun Sen's compound in a suburb outside Phnom Penh. It was not known what caused the incident or whether the premier was home at the time. At least seven ambulances and more than 10 fire trucks were seen passing a roadblock about four kilometers from where the blast occurred. Government officials refused to comment on the incident but police officers at the scene said at least two people were injured. A police officer stationed at Phnom Penh's main hospital confirmed that at least two people were being treated for injuries sustained in the explosion The warehouse stored ammunition used by Hun Sen's personal security guards, the officers said.