The teenager was hit in the stomach and leg at around 11pm last night while standing outside The Lounge Bar in Crosby, Liverpool.
He was rushed to hospital for treatment a short time later and, according to Merseyside Police, is currently fighting for his life.
In a statement, the force said: “Detectives are appealing for information following a shooting left a male injured in Waterloo last night, Friday 2 July.
“At around 11.15pm, it was reported a 17-year-old male had been shot outside The Lounge Bar on South Road, near its junction with Mount Pleasant.
“The victim has been taken to hospital for treatment to injuries to his torso and legs consistent with being shot with a firearm, and his condition is described as critical.
“Forensic, witness and CCTV enquiries are underway.”
Chief Inspector Steve Hardy said: “Our investigation is in its very early stages, and we are keen to hear from anyone who saw or heard this incident.
“This area of South Road has a number of bars and restaurants so we know it would have been busy on a Friday night, and we have spoken to a number of witnesses already.
“I want to appeal to anyone else who was in the area and may have information, or who was in a passing vehicle and might have dashcam, to contact us.
“Any details or footage could prove key to our enquiries as we piece together what happened.”
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