This is the moment a pair of defenceless teenagers are brutally assaulted in a Clydebank McDonald's by a masked gang of thugs.

The two youths, one of whom is just 14 years old, were sitting in the restaurant at around 8pm when a group of 'around 15' entered the premises.

With their faces covered, the offenders walked up to the idle group and began the vicious attack on two of the boys.

The shocking footage, thought to have been filmed by someone in the offending group, shows a flurry of punches being dealt to the boys' heads and stomachs as they attempt to protect their faces.

One of the victim's mothers' sent the sickening video to The Evening Times, and said she hopes it acts as a warning to other families in the area.

"I've lived in Clydebank all my life, and I've never dealt with anything like this," she said. "People need to know what's going on in our community.

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"The boys were sitting in McDonald's, and the other boys were just clearly looking for a fight. They already had their faces covered."

The 14-year-old boy was taken to Queen Elizabeth University Hospital for treatment, after he suffered a concussion and injuries to his face.

"He got a massive fright," she said. "He couldn't even fight back.

"One of the other boys who was attacked suffered a panic attack last night. It's been horrible."

The McDonald's staff were allegedly forced to lock the doors after they told the violent group to leave, and quickly tended to the victims' injuries.

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"I can't thank the girls at the counter enough," explained the boy's mother. "They were probably terrified, but did everything they could to help."

And the mother says hospital staff were 'relieved' the boy had only been targeted with fists, and said his injuries could have been catastrophic.

"I hope everyone is just on their guard from now on," she said. "Our boy is really shaken up, and it's just as well they were only hitting him with his fists.

"Stuff like this doesn't happen here. I'm never one to name and shame, but this incident is different.

"I would hate to see another mum from the area in this position tomorrow.

"At least this makes people aware of what's going on."

Police Scotland confirmed they were called out to the assault.

A spokesman said: "We received a report of an assault at around 8pm last night.

"Enquiries are ongoing. "