08/06/2010 04:29 pm ET Updated May 25, 2011

Sum 41 Frontman Deryck Whibley ATTACKED In Japanese Bar

The frontman of Sum 41 has been hospitalized after an attack in a bar in Japan.

"Deryck Whibley was attacked in a bar last night by 3 unknown people. He is in the hospital now. Japanese police are looking into the matter," the band tweeted late Thursday night.

A couple of hours later they updated their Facebook page.

"It is unfortunate to say, but Deryck Whibley is still in the hospital," they wrote. "He was attacked late last night in Japan. We are waiting for results and we are hoping for the best. Thanks for your support."

Deryck recently came down with a serious case of bronchitis, forcing the band to cancel some of their remaining tour dates. He was married to Avril Lavigne until they split last year.