MINNEAPOLIS (AP) — Prosecutors say some of the Minnesota men facing trial next month for conspiring to join the Islamic State group had discussed attacks in the United States.

In a Wednesday court filing, prosecutors say one defendant talked about establishing a route from the U.S. to Syria through Mexico, then using that route to send Islamic State fighters into America.

Four men who are accused of attempting to join the Islamic State group have pleaded not guilty to multiple charges, including conspiracy to commit murder outside the U.S. Their trial starts May 9.

The government's document is one of many filed recently as attorneys argue about which evidence should be allowed at trial. It's in response to a defense request that prosecutors be barred from referencing evidence about attacks in the U.S.

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