A man suffered "potentially life-changing" injuries after he was slashed in the face with a glass in a Wirral street fight.
A man in his 30s was found with a deep cut to his face which police say was possibly caused by a glass or bottle.
He was taken to hospital for treatment.
Officers remained at the scene this morning to carry out CCTV , forensic and witness enquiries.
Detective Inspector Paul Parry said: "This assault has left the victim with a serious facial injury , which is potentially life-changing, and we are carrying out extensive enquiries to find out exactly what happened.
"We know there were functions taking place at the pub last night and many people milling around, some of whom will know who was involved, why this happened, and where the offender is now.
“I’d urge each and every one of those people to come forward to us, directly or anonymously, and we will take positive action and out those responsible for this serious violence before the courts ."
Anyone with information can contact @MerPolCC, 101 with reference 8 of 14 July or @CrimestoppersUK anonymously on 0800 555 111.