Police are searching for K-Ci & JoJo's Cedric "K-Ci" Hailey, who allegedly exposed his genitals at a Los Angeles radio station concert Saturday night before fleeing the scene.

Several concertgoers at KIIS-FM's annual Jingle Ball stormed out of the Shrine Auditorium and alerted officers on patrol outside the venue of the alleged act, demanding they arrest the R&B singer, Officer Danielle Lee of the Los Angeles Police Department said. Police arrived backstage just after Hailey was seen exiting the building in a limousine, Lee said.

"We haven't been able to make any contact with [Hailey] yet," Lee said. "But we are still pursuing him."

Hailey is being charged with indecent exposure, a misdemeanor crime, Lee said.

Sgt. John Pasquarielio, also of the LAPD, said most of the complaints described Hailey's actions as "grabbing himself," though some said he was "playing with himself." Pasquarielio said the police report filed was for "grabbing himself at different stages of erection."

K-Ci & JoJo were performing when Hailey allegedly exposed his genitals at approximately 7:20 p.m. The R&B duo were allowed to finish their performance, though KIIS personality Valentine apologized to the audience immediately following the incident.

Christina Aguilera, Third Eye Blind, Bon Jovi, Macy Gray and 98 Degrees were also performing at the concert, which drew about 4,000 people, many of whom were young women and girls, according to Associated Press reports.

AP also reported that at least a dozen angry parents notified the LAPD, though Lee could not confirm that number.

"KIIS-FM apologizes to all of our listeners and fans for K-Ci's actions. We do not condone such behavior," a statement issued Saturday by KIIS-FM general manager Roy Laughlin said. KIIS-FM said another statement would be released late Monday (December 18).

K-Ci & JoJo's spokesperson at MCA Records said the duo had no comment.

X, the latest album from K-Ci & JoJo (Joel Hailey), was released December 5 and is at #21 on the Billboard 200 albums chart. The brothers are expected to reunite with their original group, Jodeci, next year.

Rock and pop musicians have a long history of getting into trouble for showing a bit too much onstage.

The most famous case was Doors singer Jim Morrison's arrest for allegedly simulating masturbation and oral sex during a Miami concert in 1969. The court case dragged on for nearly a year, and though charges were eventually dropped, the arrest has been credited with turning concert promoters against the Doors.

The late Lynn Strait of the hard-rock band Snot was arrested at an Ozzfest stop in Massachusetts in 1998, after emerging naked from a prop toilet — part of fellow Ozzfest performers Limp Bizkit's stage set. Green Day's Billie Joe Armstrong paid $141.85 bail after he was arrested in Milwaukee in 1995 for exposing his buttocks, something Armstrong said he tended to do at mediocre shows.

Other rock acts, including Iggy Pop, Blink-182 and Stone Temple Pilots singer Scott Weiland, are notorious for stripping down during performances.