A man was arrested in Mexico this week for allegedly making threats against U.S. Rep. Tulsi Gabbard (D-Hawaii), the FBI announced Thursday.

Aniruddha Sherbow was arrested Wednesday in Tijuana on a federal warrant in connection with threats that occurred on two days in early August and were “deemed credible,” according to a statement from the FBI’s Washington field office.

Sherbow is scheduled to have an initial court appearance in San Diego on Thursday before returning to the U.S. District Court in Washington to face the charge of “transmission of threats in interstate commerce,” the FBI said.

Federal authorities did not specify the nature of the threats against Gabbard, a former member of the Honolulu City Council who was elected to the House of Representatives in 2012.