A man was detained Tuesday night after the area near the Boston Marathon finish line was evacuated due to unattended backpacks.
A police officer told NECN's Kathryn Sotnik that there are a couple of backpacks left unattended by the finish line.
NECN also witnessed a man being put in the back of a police cruiser; it is unknown if he was under arrest or being questioned.
Eyewitnesses say he was in all black with a veil covering his face.
MBTA Transit Police say Green line trains are passing by Copley Square due to a Boston Police investigation.
Tuesday marks the first anniversary of the twin bombings at the Boston Marathon that killed three people and injured more than 260 others.