TERROR

Feds make arrests in Minnesota, California in connection with terrorism investigation

File- This March 9, 2012, file photo shows FBI spokesman Kyle Loven giving a tour of the Emergency Operations Center at the new Minneapolis-area field office in Brooklyn Center, Minn. Loven, spokesman for the Minneapolis office of the FBI, said six people were arrested Sunday, April 19, 2015, but gave no further details. An FBI spokesman in San Diego referred questions to Loven. (AP Photo/Amy Forliti, File)

File- This March 9, 2012, file photo shows FBI spokesman Kyle Loven giving a tour of the Emergency Operations Center at the new Minneapolis-area field office in Brooklyn Center, Minn. Loven, spokesman for the Minneapolis office of the FBI, said six people were arrested Sunday, April 19, 2015, but gave no further details. An FBI spokesman in San Diego referred questions to Loven. (AP Photo/Amy Forliti, File)  (The Associated Press)

Authorities in Minnesota say arrests have been made in connection with their terrorism investigation into youth who have traveled or tried to travel to Syria.

A spokesman for the U.S. Attorney's Office says the arrests were made Sunday in Minneapolis and San Diego but there is no threat to public safety. Spokesman Ben Petok did not elaborate on the number of people arrested.

The U.S. Attorney's Office and the FBI planned a news conference Monday to announce details. The announcement will include details of a "joint terrorism task force operation."

The FBI in Minneapolis has been investigating young people who have traveled or tried to travel to Syria to take up arms with militants.