Big Brother's eleventh season has unexpectedly lost another houseguest.

NOTE: The following contains significant Internet live feed spoilers that will not be televised until a future Big Brother broadcast.  Please stop reading immediately if you wish to wait until the show's broadcast

Although the details of her departure from the Big Brother house still remain unexplained, CBS has confirmed Chima Simone, a 32-year-old freelance journalist from West Hollywood, CA, left the competition early Saturday morning.

"Chima has been evicted by the producers from the Big Brother house for violating the rules," the network said in a statement released Saturday. "She will not be part of the show's jury. Her eviction will be addressed on an upcoming broadcast of the show."

Based on the show's live Internet feeds, Chima -- who had been nominated for eviction by new Head of Household Michele Noonan only hours earlier -- left the Big Brother house during an lengthy live feed blackout that began at shortly after 1AM PT on Saturday morning. 

According to several feed monitoring websites, the blackout lasted approximately 90 minutes and had been proceeded by several earlier feed cutoffs that occurred after Chima had made comments in which she blamed the show's producers for her eviction nomination, which she believed was certain to result in her eviction at next Thursday's live eviction ceremony.

(Chima had been the season's previous Head of Household, however Jeff Schroeder was able to "overthrow" her reign due to the season's "Coup D'etat" twist, resulting in Jessie Godderz -- her closest house ally -- being evicted instead.  Natalie Martinez and Lydia Tavera, Jessie's two other allies, had then joined Chima in spending the next two days mourning Jessie's departure and villainizing Jeff and his allies.)

After winning Thursday's new Head of Household competition, Michele had nominated Chima for eviction alongside Natalie on Friday afternoon.

Prior to the blackout, the feeds had also shown footage in which Chima appeared to have deliberately thrown her portable microphone pack in water in a attempt to destroy it.

After the feeds returned, Chima was no longer present in the house and the remaining houseguests were shown making comments which suggested Big Brother executive producers Allison Grodner and Rich Meehan had held a meeting with the cast during the blackout.

It remains unclear how Chima's exit will impact the show's plans to -- unbeknownst to the houseguests -- evict two houseguests during next Thursday's live Big Brother broadcast. 

According to Big Brother host Julie Chen's previous announcement, the broadcast was scheduled to feature a special double eviction in which the competition's usual weekly Eviction Ceremony would be followed by an accelerated round of Head of Household, Power of Veto and Eviction Ceremony events which would result in the immediate eviction of a second houseguest.

Chima isn't the first Big Brother houseguest to leave the long-running CBS reality series without being evicted by her fellow houseguests.

In 2008, Neil Garcia voluntarily left Big Brother: 'Til Death Do You Part -- the special winter Big Brother edition CBS aired during the television writers' strike -- during the competition's second week due to an unspecified "urgent, personal matter."  Sharon Obermueller, who had been sequestered since she and partner Jacob Heald had been evicted at the season's first Eviction Ceremony, returned to the competition in his place.

During the show's 2003 season, Big Brother 4 houseguest Scott Weintraub was removed from the show prior to the season's first eviction after he refused to listen to the producers' instructions and threw a temper tantrum that caused some of the other houseguests to fear for their safety. 

Earlier in that same season, another would-be Big Brother 4 houseguest Brandon Showalter was removed from the show before the houseguests even entered the Big Brother house.  After the show's cast was announced, a still-sequestered Brandon allegedly attempted to contact his girlfriend -- a violation of the show's sequester-period rules.  An alternate contestant replaced Brandon when the cast entered the Big Brother house.

In 2001, Big Brother 2 houseguest Justin Sebik was kicked out of the house after a night of drinking included Justin holding a knife to the throat of fellow houseguest Krista Stegall and asking if she'd still love him "if I killed you." 

Although Krista -- Justin's "showmance" girlfriend -- didn't seem threatened by his action and later claimed to have no memory of the incident and protested that "[the producers] blew that completely out of proportion," Big Brother's producers decided to remove Justin after determining he had demonstrated inappropriate behavior.

By the time the season ended, Krista had found a new "showmance" partner -- eventual Big Brother 7: All-Stars winner Mike "Boogie" Malin, who proposed marriage to her live on Big Brother 2's season finale.  The pair later broke up and never married.  Despite her earlier comments, Krista sued CBS over the knife incident a year later.