Masked gunmen seized dozens of children at an international school Thursday near Cambodia's famed Angkor Wat temples, killing a Canadian toddler with a shot to the head before police rescued the remaining hostages after a six-hour standoff. Four attackers stormed Siem Reap International School at around 9 a.m., grabbing children from at least 15 countries and demanding money, weapons and a vehicle, according to AP. Gunfire broke out inside the school, and hostage takers later told police they killed the 3-year-old Canadian boy because he was crying too much. Police moved in after they «threatened to kill the other children one by one,» Information Minister Khieu Kanharith said. Authorities said they managed to talk the attackers out of the building after giving them a minivan and US$30,000 in cash. When the men got into the vehicle with four children, security forces closed the gate to the school compound and launched an assault, yanking the men from the van. --More 2004 Local Time 1704 GMT