A 27-year-old man from Downey has been arrested on federal charges of possessing child pornography after authorities linked him to an online network of violent extremists, according to court records.

Dong Hwan Kim was taken into custody Wednesday at his home by members of the FBI’s Joint Terrorism Task Force, the Justice Department said. He was charged in a criminal complaint filed in U.S. District Court in Los Angeles and is expected to make his first court appearance Friday.

The complaint alleges that Kim coerced several minor girls into producing sexually explicit photos and videos between 2022 and the present. Prosecutors say Kim threatened to expose the material to family members and others if the victims refused to provide additional images.

Investigators believe Kim was active in

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