Footage has emerged of a police community support officer being arrested for drink-driving after calling for back-up to deal with an motorist he had pulled over.

PCSO Andrew Seston, 44, stopped 35-year-old Irfan Mehrban after he had picked up his son from school suspecting him of smoking marijuana in High Wycombe, Buckinghamshire.

After the pair got into an argument, Mehrban said he could smell alcohol on the officer's breath. When Seston called for police back-up to deal with the incident, the officers had the same suspicions and breathalysed him.

Seston was found to be two-times over the drink-drive limit. Seston was banned from driving for 12 months after pleading guilty to drink-driving last May and resigned from Thames Valley Police.

Mehrban, who recorded the incident from when the police arrived, said: "I had just turned into my street after picking my son up from school, and this copper flagged me down.

"He asked me to get out of the car, so I did because I was at home. I asked him why he stopped me, and he said he thought he could smell cannabis.

"It was then I smelled his breath and I was like 'whoa'. He stank of alcohol. I don't drink and I don't do drugs, so I started arguing with him because he was drunk.

"It was then that he called for back-up and I rang the police myself. When the other police turned up and arrested him, it was the absolute definition of justice."

He added: "I gloated a bit, but I think I deserve to. He was trying to make my day miserable, and got what was coming to him."

A Thames Valley Police spokesperson said: "Andrew Seston is no longer employed by Thames Valley Police and so as he is not an employee, we would not comment."

The footage has since been uploaded to YouTube where it has attracted tens of thousands of views in less than a week.