Panic at London Bridge as flare shoots 10ft into the air

"It was like a Roman candle firework, there was lots of smoke and people were screaming and running out the station," electrician Peter Difolco, told the BBC.

"I had guessed it was something electrical but there were a lot of frightened people.

"There was a small explosion like a firecracker. It went up quite high and started working its way down the track, it went about 120 foot and it lasted for about a minute.

"There were lots of police sirens and then the station was evacuated and staff were comforting people."

The incident took place at about 1.30pm on Saturday afternoon.

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