Michael Johns dead
Former American Idol contestant Michael Johns died of blood clot in his ankleTwitter

American Idol contestant Michael Johns, who appeared in Season 7 of the hit singing competition, has died. He was 35.

The cause of death is believed to be a blood clot in his ankle, reported Hollywood reporter.

Michael leaves behind wife, Stacy Vuduris, who he married back in 2007.

According to another TMZ, Michael was in a 'great amount of pain' after injuring his ankle.

The singer visited a doctor after the 'swelling and bruising had made their way up his leg.' He was allegedly cleared to go home by doctors, but was found dead the following afternoon on his friend's couch. He reportedly died in his sleep.

Fox paid tribute to the singer, saying: "Michael Johns was an incredible talent and we are deeply saddened by the news of his passing.

"He was a part of our American Idol family and he will be truly missed. Our hearts and prayers go out to his family and friends during this difficult time."

The singer's family has also released a statement thanking everyone for "the outpouring of love and support."

"Our family is devastated by the passing of our beloved Michael, a wonderful husband, son, brother, uncle, and friend," it said.

"We appreciate the outpouring of love and support we have received from all corners of the globe. Please keep Michael in your thoughts and respect our need to grieve privately in this difficult time."

Tributes poured in, in memory of the singer.

Simon Cowell, the American Idol judge has paid tribute to Michael Johns after his death.

Cowell tweeted after hearing the news, calling the Perth-born singer "a truly great guy."

He recorded an album Hold Back My Heart in 2009 and has done a tremendous amount of charity work with former executive producer Nigel Lythgoe.

Lythgoe told TMZ, "He was a great talent and dear friend. My boys and I are devastated."

The show's longtime host Ryan Seacrest said it was "sad news for the idol family."

Randy Jackson, judge on American Idol and executive producer, tweeted: