Carlton players Lachie Cowan and Will Hayward receive hospital treatment after house party

Carlton have been plunged into crisis with Will Hayward and Lachie Cowan requiring treatment at hospital after a wild night partying with teammates.

Police and ambulance crews were called to Hayward’s home in South Yarra in the early hours of Sunday morning, but the club is refusing to confirm whether they are investigating alleged illicit drug use.

WATCH THE VIDEO ABOVE: Carlton players hospitalised after wild party

Early Sunday morning, Hayward and Cowan both required emergency treatment at Melbourne’s Alfred Hospital

Ambulance Victoria confirmed they responded to an incident in South Yarra with Advanced Life Support paramedics attending the scene.

A man in his 20s was then taken to hospital with upper body injuries in a stable condition.

The club says that was for Cowan.

“Cowan received medical treatment and underwent observation, before being discharged a short time later,” Carlton said in a statement.

“Will Hayward experienced a minor cut to the head after a fall, and admitted himself to hospital where he received stitches before being discharged.”

The club claiming the pair were admitted to hospital under separate circumstances on Sunday morning.

The club also confirming the pair was together on Saturday night.

7NEWS understands the players were allegedly using an illicit drug, a white powder, but it was laced with something else.

Cowan suffered a seizure, while Hayward suffered a cut to his head.

One source told 7NEWS that Hayward hit his head on a tap in the shower while bending down to pick up his tooth brush.

Hours after the story broke, Carlton released its statement.

7NEWS understands several Carlton players had attended the Caulfield races earlier in the day. Some then headed out around Chapel Street and then to the player’s house.

The club refused to confirm how many players were there.

Sources have told 7NEWS another player and a former Blue allegedly took the same drugs and also suffered adverse health effects.

On Friday, the health department put out this urgent alert.

“Nitazene found in yellow tinted powder in Melbourne,” adding it’s a potent synthetic opioid that con produce life-threatening toxic effects in very small amounts, often 100-200 times as potent as heroin.

The club would not respond to any questions around drugs, saying it’s in contact with both players with the priority for their wellbeing.

The scandal soured the end of a year which saw the Blues complete a remarkable turnaround under new coach Josh Fraser to make the finals after a disastrous start that saw Michael Voss part ways with the club.

The scandal is certain to put the spotlight on the AFL and the controversial illicit drugs policy, which was revamped earlier this year.

“Watch the AFLPA continue to defend the Illicit drugs policy,” Seven commentator Kane Cornes said.