CLAYTON, Mo. -- A Missouri man is jailed on $500,000 cash bond after being accused of telling co-workers he was affiliated with the Islamic State group and could have their auto-detailing job site blown up by making a phone call.

St. Louis County prosecutors charged Mustafa Barimac, 26, with making a terrorist threat, a felony punishable by up to seven years in prison.

Police in the St. Louis suburb of Creve Coeur said Barimac made the threat Nov. 25 to fellow employees of Teph Seal, showing them a tattoo he claimed was related to IS. In a probable-cause statement accompanying the criminal complaint, a police investigator wrote Barimac admitted making the threat.

Police said a search of the business uncovered no explosives.

Online court records don't show whether Barimac has a lawyer.