Suspicious Backpacks Dropped Near Boston Marathon Finish Line Police say they've taken a man into custody in connection with two unattended backpacks found at the Boston Marathon finish line. Police spokesman Dave Estrada says the backpacks were discovered Tuesday evening, a year after two bombs in backpacks exploded at the end of the marathon and killed three people. The bomb squad is checking the backpacks found Tuesday. Police have cleared the area. Trains are bypassing the nearby Copley Square station.