Briton Neil Entwistle, serving life for the murders of his wife and baby daughter, has been transferred from a maximum-security prison to a medium-security one in Massachusetts.

The Department of Correction said Entwistle was moved to the Old Colony Correction Centre in Bridgewater. He was placed in the maximum-security prison after his conviction in June.

A spokesman said Entwistle’s transfer was part of the state’s inmate classification process that takes a prisoner’s safety into account.

Entwistle, from Worksop, shot dead 27-year-old wife, Rachel, and nine-month-old daughter, Lillian Rose, in January 2006 after becoming despondent over mounting debt and dissatisfied with his sex life. Rachel was a former teacher at St Augustine’s High School in Redditch.