DETECTIVES are today investigating an unprovoked attack, which left a 16-year-old boy with a cut wrist.The boy was cycling along Norwich Road in Ipswich at about 10pm last night, and was about to turn into a pathway leading to Marlow Road when a man approached and spoke to him.

DETECTIVES are today investigating an unprovoked attack, which left a 16-year-old boy with a cut wrist.

The boy was cycling along Norwich Road in Ipswich at about 10pm last night, and was about to turn into a pathway leading to Marlow Road when a man approached and spoke to him.

The offender started to shout and swear at the boy, and then produced a knife.

The boy held up his hands to defend himself and suffered two cuts to his wrist.