Drummer Rockett announced during a radio interview this week (begs14Dec15) that he has undergone cancer treatment after doctors found a tumour at the base of his tongue.

Michaels has now sent well wishes to his former bandmate and admitted in a post on his official website that he has kept Rockett's health battle a secret for some time.

Alongside a picture of the duo, he writes, "My thoughts and prayers go out to Rikki. I have known for awhile he was going through this tough battle. Although people have asked me about his health, out of respect for Rikki's wishes it wasn't my place to speak about it until Rikki was ready to talk about it himself. He is a longtime friend and a true fighter."

Rockett will have a scan in February (16) which will determine if he is clear of the disease.