A teenager had his bike stolen at knifepoint by two men in Aylesbury.

The 19-year-old was cycling along Churchil Avenue at around 6am on July 14 when he stopped outside Cottesloe Park to inflat the bike's tyres. 

When he finished pumping them up, two men approached him and asked for a cigarette but he did not hand one over. 

As he was walking away, one of the men pulled a knife from his waistband and told the cyclist they were taking his bike. 

They fled with the bike in the direction of Church Square. 

Both robbers are white men, aged between 16 and 20. 

The first, who had the knife, was around 6ft tall and of a slim build, and was dressed in black Adidas tracksuit bottoms with white stripes down to the knee, a black hooded top with the words ‘Hood Rich’ written across the front, with the hood up.

He also wore a black snood which was pulled over his mouth and nose.

The second was around 5ft 9ins tall and of a slim build. He was also wearing black Adidas tracksuit bottoms with white stripes to the knee, and a light grey hooded top with the hood up.

He was also wearing a black snood covering his mouth and nose.

Investigating officer, Detective Constable Rachel Huggins, of Aylesbury police station said: “I am appealing for witnesses to this incident, where a 19-year-old man was robbed of his bike after one of these two offenders produced a knife towards him.

“I’d ask that any witnesses make a report to the force, either online or by calling 101. Please quote reference 43210311439 when doing so.

"Alternatively, you can call independent charity Crimestoppers on 0800 555 111, for which you will receive 100% anonymity while making reports.”