Good Charlotte rocker finally says sorry for drug bust

Joel Madden, second from right, is worried about his future as a judge on The Voice.

Remorseful rocker Joel Madden is sorry for letting down his legion of fans after a police raid on his Sydney penthouse uncovered a small stash of marijuana.

The singing coach on hit TV show The Voice told Australia's Nine Network getting caught with a prohibited drug at The Star casino complex was not the way he wanted to get on the front page of newspapers.

But while the Good Charlotte frontman was doing his best to douse the situation following Tuesday's raid his fellow TV coach Seal inflamed it with a Twitter outburst defending his friend.

The British soul singer fired off a series of angry tweets on Wednesday morning on media coverage on the raid of his fellow The Voice coach.

In his twitter tirade Seal said Madden was meeting a cancer patient when the hotel sent police to his room, and that the US rocker was being trashed in the media for "having a joint".

But the posts were quickly deleted and soon replaced with a fresh series of tweets.

"I want to apologise for my rant earlier. Joel is one of my best friends and I was really hurting for him," Seal tweeted.

"I want to say I have loved being in Australia, I've loved working on The Voice and with an incredibly talented group of Australian artists.

"It's been almost 11 weeks away from my kids and me saying, 'I can't wait to go home' was me missing being home with them."

Seal's original tweet read: "...Shame one (sic) the Star...you ask him to meet n greet a cancer victim in your hotel then send police to his room?? Nice very classy..keep it up Judas. I'm done here. can't wait to go home".

Madden said NSW police had been respectful towards him and had not charged him.

"I just want to apologise to anyone I have let down," he said.

"It was never my intention to disappoint people."

Police raided Madden's room on Sunday after a cleaner found a small amount of marijuana.

The Voice is the most watched program in Australia, with almost 1.75 million people tuning in to Monday night's semi-final.

- AAP