Nicollette Sheridan Nicollette Sheridan

Desperate Housewives alum Nicollette Sheridan has updated her lawsuit against executive producer Marc Cherry and ABC, saying the network investigated and dismissed her claim of physical abuse as a "light tap on the side of the head," according to The Hollywood Reporter.

Desperate Housewives' Nicollette Sheridan suing ABC, Marc Cherry

Sheridan filed the $20 million, seven-count lawsuit for wrongful termination, assault and battery, and discrimination in April, claiming Cherry struck her on the show's set and continued engaging in abusive behavior. At the time, ABC said similar claims were made by Sheridan a year prior and they were found to be "without merit."

The 46-year-old actress now claims ABC fully investigated her complaint in 2008, and that Howard Davine, ABC Studios' executive vice president said Cherry "gave her a light tap on the side of her head for the sole purpose of providing direction for a scene they were rehearsing." Sheridan said the investigation was then closed with no further action taken.

The actress also claims that in February 2009, she was told her Housewives character, Edie Britt, was being killed off, and she was given a strict publicity plan to follow to "break the story" of her character leaving the show.

Desperate Housewives stars dispute Nicollette Sheridan's claims

ABC declined to comment. A call to Sheridan's attorney was not immediately returned.