Peter Bergman, a co-founder of the offbeat Los Angeles comedy troupe Firesign Theatre and host of the late-night KPFK-FM radio program, “Radio Free Oz,” has died. He was 72.

Bergman died Friday, according to an announcement on the Firesign Theatre website. He had leukemia.

Beginning in 1966, Phil Proctor, David Ossman, Phil Austin and Bergman recorded Firesign Theatre comedy albums that had a “surreal-psychedelic-literary” bent, according to a Times profile.

A full obituary will follow at latimes.com/obits.

-- Claire Noland

Photo: Clockwise from far right, Peter Bergman, and his fellow Firesign Theatre members Phil Austin, Phil Proctor and Dave Ossman in 1970. Credit: Firesign Theatre