Several dead in Vietnam house explosions: police

"We have been informed of two explosions this morning that killed about ten people... but we need to check the exact number of the victims," a local policeman told AFP following the blasts, which left many more victims trapped in rubble, according to reports.

The policeman said authorities were investigating the cause of the explosions in a district of the southern metropolis of Ho Chi Minh City, adding that they were believed to have been accidental.

State mouthpiece Tuoi Tre newspaper reported on its website that a family of seven was among those killed and many people remained trapped in the rubble.

It said local people heard two large explosions within five minutes of each other -- causing shockwaves that rattled homes up to several hundred metres (yards) away. They discovered three homes ablaze and partially destroyed.

Hundreds of firefighters on more than a dozen fire trucks rushed to the scene and were leading rescue efforts, the newspaper said.