Tom Petty, the dynamic and iconoclastic frontman who led the band the Heartbreakers, went into full cardiac arrest at his Malibu home Sunday night, with conflicting reports on whether the Hall of Fame musician died on Monday. Petty was found unconscious, not breathing and in full cardiac arrest at his home, according to TMZ, and rushed to the hospital and placed on life support. EMTs were able to find a pulse when they found him, but TMZ reported that the hospital found no brain activity when he arrived. A decision was made to pull life support. CBS originally confirmed Petty's death per the Los Angeles Police Department, but TMZ claims the musician is still on life support.

A rep for Petty did not immediately return a request for clarification. A rep for the LAPD declined to comment on Petty's situation to Rolling Stone, though a spokesperson tweeted that "the LAPD has no information about the passing of singer Tom Petty. Initial information was inadvertently provided to some media sources. However, the LAPD has no investigative role in this matter. We apologize for any inconvenience in this reporting."

"It’s shocking, crushing news," Petty's friend and Traveling Wilburys bandmate Bob Dylan tells Rolling Stone in a statement. "I thought the world of Tom. He was a great performer, full of the light, a friend, and I’ll never forget him."

Tom Petty and the Heartbreakers recently completed a summer tour last Monday with three nights at the Hollywood Bowl. The trek marked the band's 40th anniversary and found him playing rarely played deep cuts like their first album's opener, "Rockin' Around (With You)," and a selection of Wildflowers cuts. It was intended to be his "last trip around the country." He told Rolling Stone, though, that it wasn't his intention to quit playing. "I need something to do, or I tend to be a nuisance around the house," he said.

In the late Seventies, Petty's romanticized tales of rebels, outcasts and refugees started climbing the pop charts. When he sang, his voice was filled with a heartfelt drama that perfectly complemented the Heartbreakers' ragged rock & roll. Songs like "The Waiting," "You Got Lucky," "I Won't Back Down," "Learning to Fly" and "Mary Jane's Last Dance" all dominated Billboard's rock chart, and the majority of Petty's albums have been certified either gold or platinum. His most recent release, Hypnotic Eye, debuted at Number One in 2014. Petty, who also recorded as a solo artist and as a member of the Traveling Wilburys and Mudcrutch, was inducted into the Rock and Roll Hall of Fame in 2002.

Thomas Earl Petty was born in Gainesville, Florida, the son of an insurance salesman, on October 20th, 1950. He quit high school at age 17 to join the southern-rock group Mudcrutch, which was taking off at the time. The group's lineup featured two musicians Petty would collaborate with for much of the next five decades, guitarist Mike Campbell and keyboardist Benmont Tench. But while the band was taking off, they broke up upon moving to Los Angeles in the early Seventies.

Petty started his career in earnest in 1975 when he cut a demo with Campbell and Tench that also featured bassist Ron Blair and drummer Stan Lynch. They called themselves the Heartbreakers and recorded their debut, Tom Petty and the Heartbreakers, which came out in 1976. It failed to make an impact at the time (lead single "Breakdown" didn't even chart), but they picked up heat after touring England as support for future E Street Band member Nils Lofgren. They soon became headliners on the tour, and the album topped the U.K. chart.

The label reissued "Breakdown" in the U.S. and it reached the bottom rung of the Top 40 a year after it came out. Subsequent singles, from the group's second LP, You're Gonna Get It!, such as "Listen to Her Heart" and "I Need to Know" charted in the upper half of the pop chart. Around this time, one of Petty's most apparent influences, the Byrds' Roger McGuinn, recorded a cover of the self-titled album's closing track, "American Girl," proving Petty's ability to write hits.

But before the decade was up, Petty found himself bankrupt after the record label MCA attempted to buy out his contract from ABC Records, which distributed Petty's original label. It took nine months of litigation for Petty to secure a new deal so he could put out the biggest record of his career, 1979's Damn the Torpedoes, which reached Number Two on the album chart and has since been certified triple-platinum. The album contained the singles "Don't Do Me Like That" and "Refugee," establishing him as a full-fledged hit maker.