BOSTON -- Authorities still don't know who shot and killed a mother and her baby inside their Hopkinton home last weekend, but they have talked with the victim's husband, who is out of the country.

NewsCenter 5's Gail Huff reported that Neil Entwistle, 27, was reportedly involved in the Internet pornography industry.

Entwistle, who police said is not called a suspect in the double murder, was answering some troubling questions about his business dealings. The British citizen reportedly had a Web site in England that offers clients a pornographic Web site set up which promises to make $6,000 a month profit. But it appears to be a type of pyramid scheme.

He and his wife both sold services on eBay under several company names. Numerous complaints, at least 16, have been lodged against them. One of their companies offers people $20,000 to work on the Internet, apparently selling advertising.

After several days of searching, police tracked Entwistle down after finding his BMW car at Logan International Airport.

"The car that Neil Entwistle was driving has been found. Police have that vehicle at this time," Middlesex County District Attorney Martha Coakley said.

Neil Entwistle contacted police Tuesday from overseas. He talked with detectives about the deaths of his wife, Rachel, 27, and their 9-month-old daughter, Lillian.

"We are aware of where he is. We have, in fact, been in touch with him, and continue to investigate this case," Coakley said.

An autopsy Tuesday confirmed that both mother and baby were each shot once sometime between Thursday and Saturday. Rachel Entwistle was shot in the head, the baby in the stomach. Authorities initially suspected just one gunshot killed both mother and daughter because both had what appeared to be a torso wound.

No one had heard from the Entwistles since Thursday. When no one answered their door for a planned dinner party at their 6 Cubs Path home on Saturday, relatives became concerned. The bodies were found in a bedroom Sunday evening. The doors to the house were locked and there was no sign of forced entry, leading police to believe the killings were not random. The family had only lived in the house for 10 days.

Neil Entwistle was said to be looking for work in the technology industry. Rachel Entwistle, who had worked as a teacher, was also not working.