Media playback is unsupported on your device Media caption Five people died at the scene and two more later, Sunaina Gulati reports

At least seven people were killed and 19 injured when a suspected World War Two bomb exploded in a scrap metal warehouse in the Thai capital, Bangkok.

Construction workers found the bomb and sold it, believing it was inactive.

Warehouse workers used a blow-torch to take the bomb apart and detonated it in the process, reports said.

The massive blast destroyed the shop and created a large crater. It also damaged nearby houses and started a large fire.

Image copyright AFP Image caption Five people died at the scene and two more later, Thai officials said

Thai police said that five people died at the scene.

"The warehouse workers thought the bomb was no longer active so they used a metal cutter to cut into it, causing the explosion," local police chief Virasak Foythong told the AFP news agency.

Police bomb squad chief Kamthorn Auicharoen told the Associated Press news agency that it was "likely this is a bomb dropped from a plane during World War II".