Smoke seen coming out of a Sutton video store today was from a security alarm, not a fire.

A concerned resident dialled 999 shortly after 8.30am after spotting the smoke in Blockbuster Video in Sutton High Street.

Firefighters went to the store to investigate.

A "smoke cloak" alarm had activated, designed to fill the store with smoke to to disorientate burglars during a break-in.

It had activated by mistake.

The store is open as normal.