Lansing, Mich. ? Three men were arrested Friday on charges of supporting terrorism after they purchased 80 prepaid mobile phones from a Wal-Mart store, police said.

The men were being held on charges of soliciting or providing material support for terrorism and obtaining information of a vulnerable target for the purposes of terrorism, police Sgt. Dale Stevenson said. They were being held in Tuscola County Jail and were scheduled to be arraigned today.

Stevenson declined to elaborate on how the case relates to terrorism.

He said the men, ages 18, 22 and 23, went to a 24-hour Wal-Mart store in Caro early Friday and bought the cell phones despite a store policy limiting customers to three phones per purchase. A Wal-Mart clerk who thought the purchases were suspicious alerted police.