Shocking footage has emerged of the moment a man stabbed a bouncer outside a Melbourne nightclub just before the Easter long weekend. Police say the man had been ejected from the club late Thursday night when he soon returned and attacked the security guard from behind. Police have expressed their 'disgust' over the incident while the 29-year-old bouncer was taken to hospital with non-life threatening injuries, the ABC reports. Scroll down for video . Shocking footage has emerged of the moment a man stabbed a bouncer outside a Melbourne nightclub just before the Easter long weekend . It is believed two men had been removed from the venue on Swanston Street when they allegedly assaulted two male staff members at about 10.13pm. Police say the pair, aged 27 and 36, sustained minor facial injuries when they left the club but did not require hospital treatment. At about 10.53pm, one of the men returned and stabbed the North Melbourne man in the back before running from the scene. Detective Senior Constable Alex Brgoc told the ABC 'it was disgusting watching the footage'. 'The security guard involved wasn't even involved in the initial ejection. He had his back turned so he had no opportunity to defend himself,' he said. Police have released CCTV footage of the incident, as one of the men is described as having a solid build and dark hair. He was wearing a blue/purple t-shirt, jeans and runners. The second man is described as having a solid build, about 180cm tall with brown hair. He was wearing a maroon t-shirt and dark-coloured pants. Police say a man had been ejected from the club late Thursday night when he soon returned and attacked the security guard from behind . In a separate incident, early on Good Friday, another security guard was stabbed in Melbourne. Police believe a 24-year-old man was refused entry into a nightclub on Queens Street at about 4.30am when he then allegedly slashed one of the bouncers in the leg and fled. The injured security guard and his colleagues chased after the South Melbourne man to the corner of Collins Street where an alleged assault took place between the two parties. The 24-year-old suffered serious injuries and was taken to The Alfred hospital where he remains in a stable condition. The security guard suffered a minor slash wound but did not require any medical treatment. Anyone with any information about either of the stabbings should contact Crime Stoppers on 1800 333 000.
Police say the man had been ejected from the club when he returned and stabbed the bouncer in the back.
The incident occurred at about 10.53pm on Thursday night.
The bouncer, 29, was taken to hospital but did not suffer life threatening injuries.
In a separate incident, another bouncer was stabbed in the leg on Good Friday.
Police urge anyone with information about either of the incidents to contact Crime Stoppers.