Three Maine farms with ties to Jack DeCoster, the owner of one of the farms involved in the recent U.S. egg recall, are under scrutiny.

A congressional committee has requested inspection records and documents relating to any allegations of egg contamination at the farms. According to Maine state veterinarian Don Hoenig, no commercial farm building has tested positive for Salmonella enteritidis since October 2009. According to Hoenig, Maine has enacted regulations that go beyond federal requirements, including vaccinations of young birds for salmonella, follow-up testing and increased building inspections and cleaning.