A teenager was taken to hospital after being stabbed by a group of men riding electric motorbikes and wearing balaclavas in Edinburgh.
Police were called to Albert Place and Leith Walk area shortly after 1am on Wednesday after being made aware that two teenagers had been attacked by a group.
Emergency services took a 19-year-old to the Royal Infirmary of Edinburgh after he suffered a stab wound in his leg.
An 18-year-old was treated at the scene for an injury to his leg sustained while attempting to flee the group.
Officers have now launched an enquiry into the incident and have described the suspects as white, wearing balaclavas, gloves, rucksacks and dark clothing, and were last seen on their motorbikes in the direction of Albert Street.
Detective sergeant Steven Dick said: “This was a completely unprovoked incident, and we are carrying out extensive enquiries to identify the group of three males on motorbikes involved.
“Our enquiries so far suggest they have been riding their motorbikes a short time earlier in the city centre so I would urge anyone who believes they may have seen them to get in touch.
“Anyone else with any information can get in touch with us by calling 101, quoting reference 174 of October 19, or call Crimestoppers anonymously on 0800 555 111.”