"When you see your town invaded like this, it's stunning," she said. "Everyone in Watertown is just so grateful that he's caught and that we're liberated."
The jubilation was widespread. The mayor of Boston tweeted, "We got him!" And at the home of the New York Mets, spectators leapt to their feet and cheered when the news spread during a game against the Washington Nationals.
Hundreds of people marched down Commonwealth Avenue, chanting "USA" and singing the Red Sox anthem "Sweet Caroline" as they headed toward Boston Common. Police blocked traffic along part of the street to allow for the impromptu parade.
"I can finally sleep tonight," said 27-year-old Lisa Mara, standing along Boylston Street, just a few blocks from her home.