03/12/2013 02:53 pm ET

'Sherlock' Season 4: Benedict Cumberbatch Reveals New Season Contract

"Sherlock" Season 4 is happening, according to series star Benedict Cumberbatch.

At an event, Cumberbatch revealed he and his co-star Martin Freeman are signed on for new episodes after Season 3, which is "Sherlock" currently in production.

"All I know at the moment is I'm doing these three [episodes of the upcoming series] and another three," Cumberbatch said at the South Bank Show Awards, according to

"Sherlock" could live on for more seasons after Season 4, but that depends on its actors and co-creator Steven Moffat.

"It just depends on Martin and I's availability, how long we can keep it going. It depends on Steven's ability. I'd love to keep it going," Cumberbatch said.

Cumberbatch was recently in "Parade's End" and can next be seen in "Star Trek: Into The Darkness." Freeman plays Bilbo Baggins in the new "Hobbit" trilogy.

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