Two workers were seen scrambling to safety after they were caught on a high-rise apartment blocks roof - as an electrical storm started.

The men had been carrying out maintenance on the block of flats in Bangkok, Thailand, when thunder started overhead.

Blinding bolts of lightning tore down from the heavens - leaving the men at risk of being electrocuted in such an elevated position.

They were seen quickly running towards a hatch as rain began to fall. Such sudden downpours are a sign that the monsoon season in Thailand is drawing near.

Onlooker Richard Maguire, who filmed the clip from a neighbouring building, said: ''I was just recording the violent tropical weather and noticed the two men on the roof. When they realised the storm was heading towards them they quickly ran towards the exit to get off the roof.''