A British girl and two Irish youngsters are recovering tonight after a terrifying armed school siege in Cambodia in which a fellow kindergarten pupil was killed, officials confirmed.

Masked gunmen seized dozens of children at an international school in north-western Cambodia today, killing a three-year-old Canadian boy and threatening to shoot the others one-by-one before police rescued the remaining hostages, police and government officials said.

Four masked gunmen killed a three-year-old Canadian child during a hostage stand-off at an international school in Cambodia today before police raided the building, freeing the dozens of remaining students and arresting the attackers.

Two Irish children are reportedly among dozens of students being held hostage at an international school in north-western Cambodia today.

Six masked men took 70 students and three teachers hostage at an international school in north-western Cambodia today.

Thailand cut virtually all ties with Cambodia today and evacuated hundreds of its terrified citizens from Phnom Penh after unprecedented anti-Thai riots there.