(Pawtucket, RI) -- A mother and son are facing drug charges. Pawtucket police say Maribel Davila and Ezequiel Matos were busted for selling Percocet on Tuesday. The two were nabbed after undercover officers responded to an ad on Craigslist for "Roxy Blues." Matos was arrested after he got into his vehicle with Davila and his two-year-old child. The child was turned over to his mother.