NEW YORK (AP) -- Linkin Park is canceling the rest of its U.S. tour after its lead singer injured his leg.

Mike Shinoda, left, and Chester Bennington of Linkin Park perform in concert during their "Carnivores Tour 2014" at the Susquehanna Bank Center in Camden (Photo by Owen Sweeney/Invision/AP, File)

Chester Bennington says he needs immediate medical attention and it's impossible for him to perform. Bennington hasn't said how he injured his leg.

Linkin Park's "The Hunting Party" tour kicked off last week. The rock band performed only three concerts.

Bennington appeared onstage with crutches at the band's Sunday concert in Indianapolis.

He said Tuesday he's "disappointed" he can't perform and called the first few shows "magical."

Fans can seek refunds for the remaining 16 shows.

The Grammy Award-winning band's hits include "In the End," "Numb" and "New Divide."

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