No one has been reported injured and there is “no evidence to suggest a victim was struck,” Transit Police said.

Matthew West says he was on a Red Line train approaching Harvard Square when he heard the gunshots. "I still don’t know what happened. I’m walking around in a state of disbelief," West said.

The Red Line will be free between 3 p.m ... the third rail inside Park Street Station in downtown Boston, halting train service between Harvard and Broadway stations until about 10 a.m. It ...