Cambodian police have caught two suspects and were still hunting for three others for Sunday's failed explosions at the Cambodia-Vietnam Friendship Monument, police source said on Tuesday.
The arrested ones, all Kampuchea Kroms, planted three homemade bombs at the base of the monument in Phnom Penh on Saturday night in order to destroy the building, the source said on condition of anonymity.
They would be sent to court for trials soon, the source added.
The three poor-quality bombs were laid late Saturday at the foot of the Cambodia-Vietnam Friendship Monument. One exploded at around 05:15 a.m. on Sunday morning, though no one was injured and the statue not damaged. Bomb disposal experts from the Cambodian Mine Action Center later disabled the two remaining devices.
Kampuchea Kroms are those living on the border land that originally belonged to Cambodia but later was claimed by Vietnam.
They used to stage protests in Cambodia, asking for various rights and statues.