Boston — Police have blown up two unattended backpacks found near the Boston Marathon’s finish line. They say they’ve taken a man into custody in connection with them.

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.

Police say the bomb squad detonated the two backpacks found Tuesday as a precaution.

Police have kept people away and tweeted asking people to avoid the area. Trains are bypassing the nearby Copley Square station.

Survivors, first responders and relatives of those killed in last year’s Boston Marathon bombing marked the anniversary Tuesday with tributes. Former Mayor Thomas Menino spoke at the nearby Hynes Convention Center.