A teenager needed 12 stitches in a head wound after he was attacked with a bottle in a Dunstable pub in the early hours of Sunday morning.
The assault took place at around 2.45am when the 18-year-old victim was in the toilets of the White Horse pub in High Street North, Dunstable.
A friend of the teenager became involved in an argument with another man, but when the victim turned around to see what was going on he was hit on the forehead with a bottle causing it to break.
The attacker then slashed him to the side of the head with the broken bottle, which resulted in a large cut. The attacker then fled the pub.
The victim was taken to the Luton & Dunstable Hospital where his wound was stitched.
Detectives are in the process of checking CCTV but are keen to speak with members of the public who were in the pub on Saturday night/Sunday morning and may have seen the assault taking place.
Det Con James Wildman, who is investigating the assault, said: “This was an appalling attack which has left the victim with a very nasty injury to the side of his head. If the wound had been just a few millimetres lower then it would have hit a main artery which could have proved to be fatal.
“I would urge anyone who was in the pub and may have witnessed the incident or knows who the offender is to get in contact with Bedfordshire Police.”
If you have information relating to this incident, contact Det Con Wildman, in confidence, on 01582 394312, the non-emergency 101 number, or text information to 07786 200011.
Alternatively contact independent charity Crimestoppers, anonymously, on 0800 555 111, or online at crimestoppers-uk.org.