Police say 24-year-old Steven Zahorsky posted the advertisement on Craigslist.org, boasting about the ``A plus'' marijuana he had for sale.
Stamford police e-mailed the alleged dealer, claiming to be a painting crew interested in buying drugs during a work break.
Police say Zahorsky agreed to sell three-quarters of an ounce of marijuana at the Interstate 95 rest area off Exit 13. Police say an undercover officer paid $320 in cash for the drug. Police then arrested Zahorsky.
Police say a search of his apartment turned up three bags of marijuana and one bag of hallucinogenic mushrooms.