Kiefer Sutherland returns to 24 filming

Sutherland's character Jack Bauer fights terrorism

Canadian actor Kiefer Sutherland has returned to the set of hit TV show 24 after filming was halted because he needed to undergo surgery.

Doctors gave the star the all clear to return to work and continue filming the eighth series, Twentieth Century Fox Television said.

Fox has not disclosed what was wrong with the star, referring to it as a "medical procedure" earlier this month.

Sutherland has played counterterrorism hero Jack Bauer since 2001.

The star first came to fame as part of the 1980s "brat pack", starring in films such as The Lost Boys, Young Guns and Flatliners.