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The-Dream

Angela Weiss/Getty Images

The-Dream, who's accused of assaulting his ex-girlfriend Lydia Nam in an argument, voluntarily turned himself in to the NYPD Wednesday morning, police confirm to E! News.

Born Terius Nash, the R&B artist and producer was booked on four charges—assault, strangulation, act in a manner injurious to a child under 17 and reckless endangerment, police said.

But representatives for The-Dream insist he did nothing wrong. "He is innocent of the charges filed against him today, and we are confident that when this case is concluded and all the evidence has been reviewed, it will be clear that he is innocent," they told the L.A. Times.

The-Dream, Lydia Nam

Zodiac/Splash News

The alleged assault took place in April 2012, at the Plaza Hotel in New York.

Nam claimed Nash, 36, strangled and punched her in the stomach while she was eight months pregnant with his son.

However, she didn't report the incident to police until Nov. 1, 2013, the NYPD said.

The-Dream is known for co-writing a string of hit songs, including Umbrella for Rihanna and Baby for Justin Bieber. He has also released five solo albums.

The artist was previously married to Christina Milian, but they divorced in 2011.

—Additional reporting by Marcus Mulick