The Los Angeles County District Attorney's Office nixed charges against Kevin Spacey stemming from accusations he sexually assaulted an acquaintance in 1992.
The allegations against Spacey, who was accused in a West Hollywood assault in 1992, and Seagal, who was implicated in a case dating back to 1993, were beyond the statute of limitations, prosecutors said.
The case remains under review, prosecutors said.
The 59-year-old is also being investigated in the United Kingdom for six sexual assault claims over 22 years.
Anderson had been accused of assault by a woman who catered an event he organized, according to reports.
Seagal is still under scrutiny for another alleged sexual assault, although the details of the accusation are unclear.
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Two years ago, California legislators enacted a law eliminating the previous 10-year-old statute of limitations for rape - the most serious of sex crimes - but that does not include offences before 2016. That makes it too old to prosecute under the relevant penal code at the time.
A number of allegations of sexual misconduct have been made against the Oscar-winning actor since last November, when he was accused by actor Anthony Rapp of making a sexual advance in 1986.
The Anderson case, which was investigated by the Los Angeles Police, involved a woman who claimed he assaulted her earlier this year. He has largely retreated from public view since the allegations became public, and he was sacked from the hit Netflix series "House of Cards".
He apologized for any inappropriate conduct with Rapp but has not commented since and has stepped away from public life. Ridley Scott also removed Spacey from his role in All the Money in the World and reshot parts of the film with Christopher Plummer as a replacement.