TMZ reported that police were called to the home of 38-year-old Wagner last Sunday after a woman's screams were heard, followed by a gunshot. No one was injured. However, when police arrived they found Wagner in possession of cocaine and heroin and arrested her on suspicion of felony drug possession, the website said.
Wagner has since posted $10,000 bail, according to TMZ. Attempts to reach Wagner for comment weren't immediately successful.
A man who was involved in a dispute with Wagner was arrested for negligent discharge of a firearm, the website said.
The case involving the drowning death of actress Natalie Wood was recently re-opened after 30 years, but the Los Angeles County Sheriff's Department uncovered no new evidence to indicate foul play was involved. Wood's death off California's Santa Catalina Island in 1981 is still considered an accident.