More than a dozen other plaintiffs filed separate claims against Combs Friday to make the same deadline.
Rivers says she bolted from the encounter in shock and disbelief.
In exchange for her signature, Rivers alleges she received a one-time payment of $25,000.
Sara RiversPrince Williams/WireImage
Scores of accusers have sued Combs during this time, starting with Combs longtime partner Casandra Cassie Ventura.
She claims Combs coerced her into taking pills that rendered her unconscious.
She alleges she awoke on the flight to find Combs raping her.
It took me months to even read Cassies lawsuit.
It was extremely difficult to process to say the least.
Artists are an important part of our society and need to be protected at all cost.
What was done bySean Combsto me as alleged in my complaint is unacceptable.
Guzels lawyer, Jordan Merson, says Combs subjected his client to a pattern of abuse.
Sevens case is very similar to Cassies.
She was up-and-coming and extremely talented, and Sean Combs said he was taking her under his wing.
Instead, he put her through hell for four of five years, Merson tellsRolling Stone.
Both Khorran and Sony were listed as defendants in Guzels lawsuit.
Attempts to reach representatives for both were not immediately successful Friday.
Plaintiff Ian Fearon claims Combs violently sexually assaulted him in 2003 when he was 19.
Mr. Combs remains confident he will prevail in court.
