MINNEAPOLIS (AP) - A federal judge has ordered a Minnesota man accused of trying to travel to Syria to join the Islamic State group to be held without bail.

Abdirahman Yasin Daud is one of six Minnesotans arrested last month on charges of conspiracy to provide material support to a foreign terrorist organization. The 21-year-old was one of two defendants apprehended last month in San Diego, where they allegedly tried to get fake passports so they could travel overseas via Mexico.

The chief U.S. district judge for Minnesota, Michael Davis, said at a hearing Friday there was no set of conditions he could impose that would protect the public safety and ensure that Daud makes his court appearances.

Daud's attorney argued that prosecutors had failed to show that he posed a threat.