The AFL has asked Melbourne to respond to evidence which could lead to the club being charged with tanking for draft picks in 2009.

The AFL said any charges that resulted were expected to be laid in late January, after the Demons have had time to respond.

"Evidence gathered during the investigation will this week be provided to relevant parties to give them an opportunity to comment," the league said in a statement on Wednesday night.

"It is expected that a final decision regarding whether any charges under AFL rules are warranted will be made in late January 2013."

AFL investigators have already interviewed key Demons football staff and officials about the allegations.