Chris Cornell, singing here in 2005 with his last band Audioslave, says he's reuniting with his Seattle bandmates from Soundgarden for a set of concerts in 2010. (Jeff Christensen/Associated Press)

Seattle rockers Soundgarden, who have not played live together since 1997, say they will be reuniting for concerts in 2010.

Frontman Chris Cornell sent out a message on micro-blogging site Twitter announcing the reunion, which will include guitarist Kim Thayil, bassist Ben Shepherd and drummer Matt Cameron, according to Billboard magazine.

"The 12-year break is over & school is back in session," Cornell wrote. "Knights of the Soundtable ride again!"

Because Cameron has a commitment to play with Pearl Jam through the spring and summer of 2010, dates and places are still in the works.

Formed in 1984, Soundgarden's founders included Cornell on vocals and drums, Thayil on guitar and Hiro Yamamoto on bass. Two years later, Cameron joined on drums.

The band came to fame with its 1989 album Louder Than Love. And in 1991, Shepherd became its permanent bassist, recording the album Badmotorfinger with the band.

Soundgarden was at the forefront of the Seattle grunge wave, which included the likes of Nirvana and Pearl Jam. Its hits include Outshined, Spoonman, Nothing to Say, Black Hole Sun and Fell on Black Days.

Since 1997, Cornell has released three solo albums and three more with Audioslave, which he split from in 2007.