Update: While CBS News had initially reported that the Los Angeles Police Department had confirmed Tom Petty's death, the LAPD has tweeted that they have no new information on Petty:

TMZ, who initially reported Petty's critical status, reported he is still "clinging to life."

Musician Tom Petty has reportedly been taken off life support after being rushed to a hospital on Sunday while in cardiac arrest, TMZ reports.

According to the site, the "Free Fallin'" singer, 66, was found unconscious in his home in Malibu, California on Sunday. Petty was then taken to UCLA Santa Monica hospital, and while his condition is unknown, the gossip site reports that the singer was "critical from the moment he was found."

The incident follows the conclusion of a lengthy tour from Petty, which wrapped up at the Hollywood Bowl last Monday.

The last time Petty played Philadelphia was a sold out show in July at the Wells Fargo Center. Petty played two shows — one at the beginning of the month, the other at the end. Of the former, Dan DeLuca wrote:

[A]re 19 superbly played – and particularly well-sung, thanks in part to newly added backup vocalists Charley and Hattie Webb, whom the bandleader said he was "so happy" to have on tour, after seeing them with Leonard Cohen – Tom Petty songs enough?
Of course not. Which is not to say that Petty
It's to his credit, in fact, that rather than turn the show into a jukebox barrage of hits, he gives the deeply simpatico Heartbreakers room to stretch out, shining the spotlight on super-sidemen like keyboardist Benmont Tench and drummer Steve Ferrone, the former Average White Band tub-thumper who Petty joked is "the new guy" in the Heartbreakers, having only been with the band 24 years.
— – who came onstage in a festive mood in a purple smoking jacket and matching vest, and employed his reedy, Florida drawl effectively all evening

Petty, a Florida native, was inducted into the Rock and Roll Hall of Fame alongside his backing band, the Heartbreakers, in 2002. The group's biggest hits include tracks such as "American Girl," "I won't Back Down," and "Runnin' Down a Dream."

The group has become one of rock's most popular acts since debuting with a self-titled release in 1976. Since that album's release, Tom Petty and the Heartbreakers have earned three Grammy Awards and 18 nominations, among other accolades.