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Ryan Phillippe denied that he assaulted his ex Elsie Hewitt. Pictured: Phillippe attends the Women's Fall 2010 Calvin Klein Collection after party on Feb. 18, 2010 in New York City. Getty Images/Andrew H. Walker

Ryan Phillippe is upset with his ex-girlfriend Elsie Hewitt after she claimed that he abused her.

On Tuesday, the "Shooter" star took to Twitter to respond to the suit that Hewitt, 21, filed against him. In his post, Phillippe clarified that he had cooperated with the police during their investigation and called his ex's claims "false allegations."

"I am saddened and disgusted by the false allegations being circulated about me. At the time these allegations were initially made, I fully cooperated with law enforcement and a thorough investigation was conducted," Phillippe wrote.

The "Cruel Intentions" actor added that he was raised by women in a household where they recognize women's rights and feminism. Phillippe stressed that he was "sickened" to find himself being accused of domestic violence.

Phillippe, 43, recognized that he is a public figure and added that there have been other false allegations made against him over the years. He has learned to accept this, considering his profession. However, he said that this case was different and he is not willing to sit back and accept the false claims without defending himself.

"Domestic violence is a very real and tragic issue faced by many women the world over and should never be used to vengefully slander or as a ploy for monetary gain," he added. "This is wrong. This is not who I am. Every one of my accuser's allegations are false."

Phillippe's response comes after his ex filed a civil suit against him asking for $1 million in damages for allegedly assaulting her on July 4. According to the model, due to the incident, she suffered chest wall pain, abrasions and severe bruising.

According to Hewitt's claim, Phillippe "grabbed Hewitt's upper arm so tightly that his grip left heavy bruises on her arm hours later. He then braced his body and violently threw her down his staircase as hard as he could. [He] kicked her, aggressively pushed her to the ground [and later] tossed her down the stairs a second time."

Hewitt's lawyer clarified that the model did not file the lawsuit for fame or money. In fact, she is not getting a dime out of it as the money will be going to a charity.

Meanwhile, Phillippe's friends have been showing their support for the actor. "A lot of Ryan's friends are reaching out and supporting him. They know he's not a violent person," an insider told Us Weekly.