Primus drummer Tim Alexander, who also plays in the band Puscifer, suffered a heart attack yesterday. The latter band's Facebook page broke the news in a post, noting that Alexander will have open heart surgery on Monday or Tuesday.

Calling All Cars! Rough news. @timalexander suffered a heart attack. Open Heart Surgery on Mon/Tues. Global Positive Thoughts, Por favor. @Puscifer We need our Herb the Ginseng Drummer aka Peter Merkin alive and thieving.

Alexander first joined Primus in 1988 and played on their 1989 live album 'Suck on This.' He stuck around through 1996, working on popular records like 'Sailing the Seas of Cheese' and 'Tales From the Punchbowl.'

He rejoined the band in 2003 and left again in 2009, when he joined Tool frontman Maynard James Keenan's Puscifer project. (He also played with the Keenan-led a Perfect Circle.) Last year, Primus leader Les Claypool announced that Alexander was once again in his band.

Alexander is currently doing double duty in both Primus and Puscifer. Hopefully, he'll be back behind the kits for both bands soon.

Here's the video for Primus' biggest alt-rock hit, 1993's 'My Name Is Mud' from their album 'Pork Soda':