GRAND FORKS, N.D. (AP) — A Minnesota man accused of starting a fire that heavily damaged a Somali restaurant in Grand Forks had pleaded not guilty in federal court.

Twenty-five-year-old Matthew Gust of East Grand Forks, Minnesota, is charged with malicious use of explosive materials. Authorities announced Friday that a grand jury had handed down an indictment.

Authorities say the Dec. 7 fire at the Juba Coffee House was started by a homemade explosive made and caused an estimated $90,000 in damage. It happened three days after vandals spray-painted what some have described as a Nazi-like symbol on the business, along with the words “go home.” Investigators say they do not know if the vandalism and the fire are connected.

Related: Man Charged With Setting Fire At Somali Eatery Makes Court Appearance

Gust was ordered to remain in custody before the March 15 trial.

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