The Brookline Police Department arrested a 47-year-old man in a weekend sting operation.
From the Brookline Police Department blog:
A 47 year old male subject was chatting online with what he thought was a 15 year old girl from Brookline, who he had met on Craigslist. They agreed to meet at a local park on Saturday. When the subject arrived he was placed under arrest without incident and charged with Enticement of a Child.