A senior military official in Cambodia says the huge explosion over the weekend that killed 20 soldiers at an army base in the country’s southwest appears to have been an accident caused by mishandling of ammunition by troops.

Four buildings destroyed in blast that also damaged homes in nearby villages

There has been no public explanation of what caused the Saturday afternoon blast at the base in Kompong Speu province, though there were no suggestions it was triggered deliberately

A funeral was held Sunday for 20 soldiers who died at an army base in southwestern Cambodia in a huge explosion of stored munitions that also wounded several others and damaged nearby houses.