FBI officials said Monday they foiled a terrorist attack being planned in a small western Minnesota town, but they offered no details about the exact targets of the attack — or the motive of the man accused of having a cache of explosives and weapons in a mobile home.

The FBI said "the lives of several local residents were potentially saved" with the arrest of Buford Rogers, 24, who made his first appearance Monday in U.S. District Court in St. Paul on one count of being a felon in possession of a firearm.

Rogers, of Montevideo, was arrested Friday after authorities searched a mobile home he's associated with and found Molotov cocktails, suspected pipe bombs and firearms, according to a court affidavit.

"The FBI believed there was a terror attack in its planning stages, and we believe there would have been a localized terror attack, and that's why law enforcement moved quickly to execute the search warrant on Friday to arrest Mr. Rogers," FBI spokesman Kyle Loven said Monday.

He said the investigation is ongoing, and agents are looking at the case as one of domestic terrorism.

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