Massive explosion in Syrian town kills 70.

Up to 70 people have been killed in an attack on a house in Hama, ANGOP international reported, citing Syrian activists.

Several houses in the Mashaa at-Tayyar district in southern Hama are said to be destroyed by a big explosion.

State media said 16 people died in the blast in a house used as a bomb factory by "armed terrorist groups".

Meanwhile, a video has emerged which purportedly shows a man being buried alive by security forces, allegedly for sending material to TV stations.

Following the blast in Hama, activists posted video on the internet showing a scene of devastation, with bodies being pulled from the rubble.

They said the blast was caused by government shelling or even a Scud missile attack.

State television showed pictures of injured children in hospital.

The reports cannot be independently verified owing to government restrictions on foreign media.