A New Middletown man will remain locked up as he awaits trial for allegedly posting a video threatening Youngstown's Jewish Community Center.

James Reardon appeared in U.S. District Court on Wednesday, where he pleaded not guilty to a two-count indictment charging him with transmitting a threatening communication and possession of a firearm in furtherance of a crime.

Magistrate Judge George J. Limbert ordered that Reardon remains in the custody of the U.S. Marshal.

Reardon, who turned 21 last month, is accused of posting a video to Instagram in which he is seen firing a weapon with the caption "Police identified the Youngstown Jewish Family Community shooter as white nationalist Seamus O'Reardon," designed to look like a mock news headline.

The post was initially reported to New Middletown police, who contacted Springfield Township police, the Mahoning Valley Violent Crimes Task Force, and the FBI.

Reardon was arrested following a search of his New Middletown residence, where police found two AR-15s, a rifle with a bayonet, knives, and an anti-tank gun, along with Nazi memorabilia. He was featured in a documentary for his participation in the 2017 white nationalist rally in Charlottesville that resulted in the death of one woman.