This is the shocking moment a 44-year-old father was beaten by a gang of youngsters on board a Dallas train after asking them to stop smoking marijuana.

Kennan Jones was attacked by the group on Sunday as they rode towards Deep Ellum in Dallas, Texas.

He had asked them to stop smoking marijuana on the Dallas Area Rapid Transit train.

The group included young men and women who punched him and threw him against the train's doors before arriving at the station.

Some of them pushed off the handle poles to kick Jones from the air.

This is the moment a gang of youngsters attacked a 44-year-old man on a Dallas train after he asked them to stop smoking marijuana

The group pushed Kennan Jones (right in checked shorts) against the train doors to beat him

Once the train had come to a stop, they spilled out on to the platform.

One of the young women then hit Jones in the head with a skateboard as he lay reeling on the ground.

She calmly walked away from him afterwards with the skateboard still in her hand.

A fellow passenger filmed the attack and shared the footage with DFW, CBS's local station in Texas.

In the video, at least one other passenger tries to intervene but it slapped away.

Jones was taken to hospital after the incident but has since been released. He had visible facial injuries when he spoke to the network.

Once at the train station, the group spilled out onto the platform where they continued to attack Jones

One of the young women in the group hit the man in the head with a skateboard as he lay lying on the ground

'Everything just went from 0 to 100. I’m just very happy to be here… happy to hug my kids,' he said.

The man said he tried to recoil during the attack and told the gang: 'OK, OK. Y'all win,' but they persisted.

Victim Kennan Jones suffered facial injuries

When the young woman hit him in the head with the skateboard, he said he blacked out.

Police are investigating the incident and the footage.

The man said he was angry the train driver did not do more to stop the attack.

'To me, they saw enough to be, to stop that moment and say, "We’re not going nowhere until police coming,"’ he said.

DART spokesman Mark Ball apologized for the man's ordeal.

'I’m so sorry it happened to him and I apologize for that.

'For him to have stood up for DART and our policies and then to be hurt by that is a tragedy.'