The FBI made several arrests in Minnesota and California Sunday in a joint terrorism task force investigation.
A Somali mother who spoke to MPR News said two of her sons were arrested – one in Minneapolis and one in San Diego. She said the FBI came to her home around noon, searched it, and took her son's computer tablet.
The mother, who was not named, says four families had sons arrested in the operation.
KSTP reports the FBI arrested a total of six men.
FOX 9 reports three of those men may have been on a bus with Hamza Ahmed in November 2014. Ahmed, 19, is facing charges of conspiracy and attempting to provide material to a terror group, and is being held without bail.
Ahmed was with three other men who took a Greyhound bus to New York. He then boarded a flight to Turkey, but was removed from the plane by the FBI, according to FOX 9.
The station reports he told authorities he was headed to Spain, but he didn't have any contacts or reservations.
The other three men were stopped at customs, and Ahmed claims he was not acquainted with the others. But bus video suggests the four were traveling together, FOX 9 reports.
U.S. Attorney Andrew Luger is expected to provide more details on the case at a news conference Monday.
In the past year, federal authorities have looked into 15 young people who left the Twin Cities, apparently to go to Syria and support the ISIS terror group, according to MPR.