A 17-year-old cyclist was dragged off his bike and punched in the face in Skegness.
The victim was riding his bike on Sunningdale Drive at around 9.20pm on Thursday, November 24, when the attempted robbery took place.
He managed to cycle away after the attack and the offender walked off in the direction of Skegness town centre.
The offender is described as a white male, around 5ft 11ins tall, and of medium build.
He was wearing a grey or silver Adidas hoody.
Anyone with information is asked to contact DC Dave Ziller at Skegness CID on 101, quoting incident number 456 of November 24.