JAKE Carlisle has apologised for his "clearly inappropriate behaviour" revealed in a video broadcast on Wednesday night after his move to the Saints was completed.
Channel Nine aired the video just hours after Carlisle was traded from Essendon to the Saints in a deal that saw St Kilda give up its prized pick No.5.
The grainy vision depicts Carlisle snorting a white substance.
While not admitting to drug use, Carlisle confirmed he had made an "error of judgement" and would commit to any club or AFL-imposed sanctions or education requirements upon his return from his overseas holiday.
"I have made a very poor decision and let people down and for that I am embarrassed and truly sorry," Carlisle said in a statement on Thursday morning.
"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.
"I know that in a few weeks' time when I join St Kilda I’m going to be expected to be open and honest with my new club so want to start by confirming my error of judgement right now."
St Kilda CEO Matt Finnis responded to Carlisle's apology by warning the club's new recruit that he would not be allowed to undermine the club's progress.
"Jake has signed a contract with the St Kilda Football Club but he is aware that he is now on notice and behaviour of this type will not be tolerated," Finnis said in a statement.
"Every player on our list has an obligation to live up to our values and to commit themselves to delivering to their best ability, on and off the field.
"But Jake will start at our club next month with an added obligation to prove that he will live within those values in order to fulfil his potential with St Kilda."
Earlier on Thursday, the Saints said they were unaware of the video when they completed the trade for the 25-year-old on Wednesday morning.
When contacted by AFL.com.au, Channel Nine said it had contacted Carlisle's manager Anthony McConville to alert him to the contents of the video before the trade between St Kilda and Essendon went through.
The network said it obtained the video of Carlisle after he sent the vision to a friend via social media app Snapchat.
St Kilda CEO Matt Finnis is scheduled to address the media at 11.30am on Thursday.
- with Michael Rogers