Thomas fled the property before making the call and a Los Angeles Police Department Swat team responded to the star's Hollywood Hills home, where the woman had barricaded herself in, according to Tmz.com.
Lieutenant Andrew Neiman told The Los Angeles Times that the woman spent the night at the home but refused to leave the next morning when asked and pulled a knife on the actor. The unidentified female also reportedly destroyed property at the residence.
A Swat team remained at the residence throughout the afternoon and were in contact with the woman, who they urged to surrender.
Officers eventually fired flash grenades and tear gas into the property before entering the building and taking the woman into custody about six hours after the stand-off began.