Sheen, in court papers, denied Richards' claims of threats, abuse and viewing pornography. According to Fox News, during an interview, Richards alleged that Sheen frequented child pornography web pages, which is a crime, but there have been no police investigations of her allegations.

"The [police] department is unaware of any child porn allegations against Mr. Sheen,"says an LAPD officer who commented on condition of anonymity.

"I am disappointed that the situation has deteriorated to the point that it has become necessary to seek the assistance of the court," Richards said in a statement Friday. "However, my primary concern is and always has been the welfare of the children and this action today was taken to ensure their safety as well as mine."

"Extra" has learned that Richards has hired security guards and has turned to Kim Basinger's divorce attorney to represent her.

Charlie Sheen on Saturday denied charges from his estranged wife, actress Denise Richards, that he had been abusive towards her and their daughters and had threatened to kill her.

"I move forward and I maintain my integrity ... and focus on my children," Sheen told Entertainment Tonight co-anchor Mark Steines in an interview for the Paramount Pictures Corp. program to be aired on April 24.

"I'm deeply saddened because this is clearly demonstrating a wanting and wilful attempt at what I describe as a radical and transparent smear campaign and clearly a departure from sound, sane, responsible co-parenting," Sheen said.

"It is a reaction to a failed marriage, a reaction to some twisted desire -- real or imagined -- to hurt, to punish, to discredit, to completely torpedo, to undermine my perception as a responsible father ... a contributing father, a guy who would give his life for his children."

Richards is "the only one entirely culpable for putting these radical allegations out for public consumption ... my children included," Sheen told Entertainment Tonight