A white nationalist was arrested Saturday for threatening to shoot up a Jewish community center in Youngstown, Ohio, police said.

James Patrick Reardon of New Middletown, Ohio, is being held in the Mahoning County Jail on charges of telecommunications harassment and aggravated menacing. His bail has been set at $250,000.

The 20-year-old sparked a police investigation after posting a video to his Instagram account on July 11 that showed him firing a semi-automatic rifle. In the post, Reardon tagged the Jewish Community Center of Youngstown and identified himself as a white nationalist in the caption.