Biohazard's Evan Seinfeld is currently doing hard time in the same maximum security prison that held L.L. Cool J just one week ago.

Seinfeld is the latest musician to go behind the walls of Oswald Maximum Security Penitentiary, the fictional prison that provides the setting and the title of the hard-hitting HBO series "Oz.

Monday night saw the Biohazard singer's first appearance on the acclaimed cable series as Jazz Hoyt, a biker jailed for assaulting a video store clerk.

Spokespeople for HBO say that Seinfeld will be around for at least one more episode, next week's season finale, but could not comment on exactly how long his character will be around.

L.L. Cool J's stint in Oz lasted only one hour. Last week, the rapper turned up behind bars as Jiggy Walker, a convicted crack dealer who claims that the state's governor was one of his clients. Like many of the musicians who have turned up on "Oz," L.L. was first drawn to the show as a fan. The rapper

then personally called the show's casting director in an effort to get himself into "Oz.

In past episodes, musicians Big X and Dupre Kelly have gone behind bars, and "Oz" has also featured a turn by Rick Fox of the NBA's Los Angeles Lakers.

The season finale of "Oz" featuring Biohazard's Seinfeld will air on Monday, August 31 at 10 p.m.