CAMBRIDGE, Mass. (AP) – Relatives of a slain mother and baby are confident authorities will “bring to justice those responsible,” a spokesman said Sunday in the family’s first public statements since the bodies were discovered.

The bodies of 27-year-old Rachel Entwistle and 9-month-old Lillian were found in a bed in their Hopkinton home last Sunday. Both had been fatally shot. Husband and father Neil Entwistle, described as a “person of interest” in the probe, left for Britain sometime around the time of deaths. There have been no arrests.

“The entire family is overwhelmed by the loss of Rachel and Lillian and the events of last weekend,” family friend Joe Flaherty said in a statement on behalf of Rachel’s mother, Priscilla Matterazzo, stepfather Joseph Matterazzo, and Rachel’s brother Jerome Souza.

“Rachel was a wonderful wife, daughter, granddaughter, sister and mother,” he continued. “She was always first to share her beliefs, her love, and her support for others. With the birth of Rachel’s daughter, Lillian Rose Entwistle, last April, Rachel shared her greatest love – that of being a mother.”

Flaherty, a longtime family friend, is an attorney and former State Police detective who headed the Suffolk County homicide unit. He read the statement at a Cambridge law office, and refused to take questions.

The statement did not name Neil Entwistle, who also was not mentioned in the obituaries published in the Patriot Ledger of Quincy. The obits say Rachel and Lillian are survived by “the loving Matterazzo, Cooke and Souza families, as well as many dear family members, both here and in England.”

A Funeral Mass is scheduled Wednesday in Plymouth, followed by burial in Kingston.

It’s not known if Neil Entwistle will attend. The 27-year-old British citizen went to the U.S. Embassy in London on Friday to meet with Massachusetts investigators. Police said they drove him to the embassy from his parents’ home in Worksop. A Nottinghamshire Police spokeswoman said Entwistle left the embassy “after helping them with their inquiries.”

It was unclear what information, if any, Entwistle provided to investigators.

Middlesex County District Attorney Martha Coakley’s office would not comment on media reports, which rely on anonymous sources, saying Entwistle refused to answer questions on the advice of a lawyer.

“There was no formal notification that he has retained any legal counsel either here or (in Britain),” Coakley spokeswoman Emily LaGrassa said on Sunday.

A phone call to the Entwistle home in Worksop on Sunday was not immediately returned.

Authorities have said Entwistle took a flight from Boston’s Logan International Airport either late Friday or early Saturday, but LaGrassa wouldn’t specify which day: “It’s not something that we’re going to release publicly.”

In their statement Sunday, relatives said they are “grateful for the outpouring of prayers, love and support offered by family, friends and strangers alike,” Flaherty read.

“As the family continues to grieve, we also celebrate and are thankful for the time we had with Rachel and Lilly. The family asks for your continued prayers,” he continued.

The family requests that the media keep away on Wednesday “to allow us the room to grieve quietly and out of the spotlight.”