A man was stabbed in the leg as he made his way home in Farley Hill on Thursday night.
Police were called to Castle Croft Road, Luton, at around 10.45pm to reports of a man having been attacked.
The victim was approached by two men who stabbed him as he was walking along Rockley Road.
The offenders are described as white, aged between 16 and 18 years old, and were both wearing hooded tops.
Detective sergeant Tom Stean, investigating, said: “This was a violent attack which left the victim with serious injuries, which thankfully weren’t life-threatening.
“I would appeal for anyone who saw anything unusual in this area to come forward with information to help us identify the people responsible and bring them to justice.”
Call DS Stean on 101 with information, or contact Crimestoppers anonymously on 0800 555 111.