A doorman outside a nightclub in Lower Broughton had acid thrown in his face in the early hours of this morning.
The incident happened at the White Hotel nightclub on Dickinson Street around 3.45am.
A man, who had earlier that night been ejected from the club, had returned armed with a knife and an unknown liquid which he threw at doorstaff.
A search of the area was conducted and a bottle containing what officers believe to be acid was found.
Two men are currently in hospital receiving treatment for burns. None of their injuries are life-threatening.
The offender is described as white, in his late 20s, of average built, about 6ft tall and with short brown hair.
Detective Sergeant Pat Wood, from GMP’s Salford borough, said: “This was a vicious and dangerous attack on men who were just trying to their job.
“Although their injuries aren’t life-threatening, they are likely to have permanent skin damage and no doubt at the time of the attack they were thinking the worst.
“There were lots of people inside the nightclub or leaving who are likely to have seen something or the man himself being ejected from the toilets.
“Please contact us. Even if you think it might just be something small it could really help us catch who did this.”
Anyone with any information should call police on 0161 856 5461 quoting incident number 538 of 29 October 2017.
If you want to remain anonymous, you can call the charity Crimestoppers on 0800 555 111.