Mayor: Human error could be factor in Somerville flooding

This weekend's flash flooding left Somerville underwater and the mayor said human error may be to blame. Saturday's flood shut down Somerville Police headquarters and several other buildings around the city, causing thousands of dollars of damage. "We're pushing over a million dollars at this point, just the replacement of equipment, cleanup costs, system upgrades that need to be done, electrical co-generation 911," said Somerville Mayor Joseph Curtatone.