This is the shocking moment a man caught fire after he was tased outside a restaurant in Philadelphia.

Witness Pat Tackney, who filmed the incident, said he saw the man being confronted outside of Jim’s Steaks in the south of the US city.

Pat claims the man refused to leave the restaurant and was forcibly removed.

The video shows two men, thought to be security guards from the restaurant, use a stun gun on the unnamed man before his leg catches fire.

Pat wrote on Twitter: “So I witnessed a man catch fire after being tased last night…”

Philadelphia Police said they were not notified of any situation outside of Jim’s.

The restaurant has not commented on the incident.