St Kilda recruit Jake Carlisle has issued an unreserved apology for his "mistake" after he filmed himself snorting white powder while on holidays in the United States.
Carlisle's shift from Essendon to the Saints was confirmed on Wednesday morning, when the trade paperwork was lodged at AFL headquarters.
On Wednesday evening, the Nine Network broadcast a video of Carlisle snorting white powder, which he doesn't identify in a statement issued via the AFL Players Association on Thursday.
"I have made a very poor decision and let people down and for that I am embarrassed and truly sorry," Carlisle said.
"First, I would like to apologise to all St Kilda members, supporters and staff, AFL fans as well as my new teammates.
"I am aware of footage being aired of me last night and I want to be upfront and say that I made a mistake.
"The video casts me in a very poor light and reveals clearly inappropriate behaviour which I regret but am accountable for."