DUNEDIN, Fla. -- Jays outfielder Melky Cabrera says he is co-operating with Major League Baseball and federal authorities on an investigation into a now-closed Florida anti-aging centre linked to banned drugs.

The former Giants star served a 50-game suspension last season for a positive testosterone test.

The Miami New Times recently released documents that purportedly linked Cabrera and several other players to purchases of banned drugs from the Florida clinic.

In a statement Friday, Cabrera said he has served his punishment and worked hard to get ready for the 2013 season.

And while he will co-operate with authorities "the best I can," he says his legal counsel has told him not to answer questions relating to the pending investigations.

Cabrera, who was at camp Friday, said he will speak no more about his 2012 season.

In his words, "I have put my mistakes behind me, have learned my lesson, and have served my punishment. I am here to play the best baseball I can to help the Toronto Blue Jays win a world championship."