Two people were killed and five others injured on Saturday night in an arson attack on a karaoke venue in central China's Hunan Province by a customer angry over his bill, according to local police.

The fire broke out at 8:46 pm in the Night Shanghai venue in Shaodong County. Two waitresses were killed.

Shaodong policemen said on Sunday that the fire was set by Zhao Hu, a local seeking vengeance after he believed he was overcharged at the venue in January.

Surveillance video shows Zhao rush into Night Shanghai on a motorbike, gash its gasoline tank with a knife and flee the scene after igniting gasoline on the floor.

Two of the injured are in serious conditions in hospital. Police are hunting Zhao.