A man has been arrested for threatening San Francisco train passengers with multiple chainsaws and yelling that he was the 'BART massacre'.

Patrick Bingman, 47, was taken into custody on Monday afternoon following what passengers described as a frightening ordeal on the BART train.

Footage filmed by a passenger showed Bingman holding a red chainsaw as he repeatedly tried to start it.

The woman who filmed his antics, @jalina_ks, tweeted that Bingman kept referring to himself as the 'Texas chainsaw massacre' and also the 'BART massacre'.

Footage filmed by a passenger showed Patrick Bingman holding a red chainsaw as he repeatedly tried to start it on a BART train in San Francisco on Monday

Early on in the video, he can be heard muttering: 'I'll cut your frickin head off.'

Patrick Bingman, 47, was taken into custody on Monday afternoon following what passengers described as a frightening ordeal on the BART train

Bingman was then caught on camera removing a green chainsaw from its box and trying to start the second device.

When he started flailing the second chainsaw around, at least two passengers could be seen walking out of the train carriage.

The passenger tweeted her video to SFBART while she was still on the train, saying: 'This sh*t aint funny @SFBART yall have to do better what the f**k.'

SFBART responded to the concerned passenger: 'We've never seen anything like this before. Best thing to do is to snap a pic and send it to dispatch via BART Watch App. You can also go to another car and alert the train operator using the intercom. What train car are you on?'

Police were alerted to Bingman's behavior by several passengers on the train and he was arrested when he got off at the Lake Merritt station.

The woman who filmed his antics, @jalina_ks, tweeted that Bingman kept referring to himself as the 'Texas chainsaw massacre' and also the 'BART massacre'

He was caught on camera removing a green chainsaw from its box and trying to start the second device. Early in the video, he can be heard saying: 'I'll cut your frickin head off.'

The woman who filmed the footage questioned the response time of authorities.

'I was on the Richmond train they stopped him when he got off at lake Merritt coming from Fremont y’all didn’t do anything UNTIL HE GOT OFF why did y’all wait!????????' she tweeted to SFBART.

SFBART responded: 'Police received multiple calls and officers quickly positioned themselves to board the train at Lake Merritt when the man actually got off. There was no waiting to respond, they acted within minutes.'

Bingman was arrested for making threats and for several outstanding warrants. He was booked into Alameda County Jail.

He allegedly admitted to waving the chainsaws around but said he was only playing.

Police said the chainsaws were stolen.