Police in the US state of Ohio have arrested a man they believe threatened to carry out a shooting at a Jewish community centre.
James Reardon, 20, posted a video online of a man firing a gun with a caption identifying the centre in Youngstown, north of Pittsburgh.
A search of his home revealed several weapons, body armour and a gas mask, police said.
A shooting at a synagogue in Pittsburgh last year left 11 people dead.
James Reardon was arrested in New Middletown, near Youngstown, on Saturday and charged with menacing and harassment. He is due to appear in court on Monday.
Investigators said the alarm was raised when a post appeared on Instagram showing a man firing a gun with the caption: “Police identified the Youngstown Jewish Family Community shooter as white nationalist Seamus O’Reardon.”