HOLLYWOOD, CA — Ronnie Ortiz-Magro, of MTV's reality show "Jersey Shore," was arrested in Hollywood Hills Friday for attacking his girlfriend, according to police. The reality TV star, who has been arrested on suspicion of domestic violence before, reportedly had to be tased by police after allegedly brandishing a knife and chasing his girlfriend.

He was arrested on suspicion of kidnapping and booked on $100,000 bail, according to Los Angeles Police Department Officer Jeff Lee. The LAPD, responding to multiple 911 calls, arrived at the 7200 block of Woodrow Wilson Drive at 2:40 a.m. Friday and came upon a chaotic scene, TMZ.com reported. According to Fox11 Los Angeles, police broke down the door to get into the home, believing Ortiz-Magro's child was inside the home and in danger. Ortiz-Magro was arrested after allegedly "striking Jen Harley, chasing her with a knife and, eventually, forcing cops to tase him," TMZ reported. "Ronnie and his GF, Jen — who've been on and off due to several violent incidents — got into another heated argument early Friday morning ... at an Airbnb they're renting in L.A."

EXCLUSIVE: Jersey Shore's Ronnie Ortiz in handcuffs after 3am domestic violence incident. Woman reported being assaulted + that Ortiz had her baby inside home. Police say he wouldn't come out so they broke down door to rescue baby. Coming up live on @FOXLA #JustOneStation pic.twitter.com/Iy6xNg2CJr

— Gigi Graciette (@GigiGraciette) October 4, 2019 "As we've seen in the past ... the argument got out of hand quickly, because we're told Ronnie allegedly slapped and punched Jen ... who then went running out of the house, screaming for help," according TMZ. The website cited law enforcement sources claiming that that Ortiz-Magro chased Harley with a knife while holding their 18-month-old daughter. Officers Arrested Ortiz-Magro after the couple went back into the house, according to TMZ, which noted that Fox11 Los Angeles broke the story.

In July, Harley was cleared of domestic battery stemming from an alleged fight with Ortiz-Magro in Las Vegas on New Year's eve. As many as 1 in 4 women have experienced domestic violence. If you or someone you know is the victim of domestic violence, call the National Domestic Violence Hotline at 1−800−799−7233 for help.