Actor and YouTuber Ray Diaz was arrested Friday for sexual assault after videos posted on social media allegedly showed him berating, threatening and hitting a teenager purported to be his girlfriend, the Los Angeles Police Department (LAPD) confirmed on Twitter.

LAPD detectives made the arrest Friday evening with the assistance of San Diego police.

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The department opened an investigation this week after a video appeared on the teen's Instagram account July 5. The 17-year-old told police she began dating the 33-year-old when she was 16, BuzzFeed reported.

"I was just so scared always because he would yell at me always," she said. " ... It was my fault if somebody would ever have any suspicions that him and I were dating. He would yell at me for hours,” she said in a YouTube interview, according to BuzzFeed.

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"The LAPD is aware of several social media posts related to a social media personality, alleging physical abuse and sexual relations with a minor," the department posted on Twitter on Thursday. "We take these allegations seriously. Currently, the Department has directed a group of investigators to look into these allegations."

Diaz claimed the videos were merely an act. His bail has been set a $500,000, LAPD said.