Justine Wilbur was killed in the suspected quadruple murder-suicide on Wednesday The five people who were found dead inside a home that caught fire have been identified, and the case is being investigated as a murder-suicide by police. Justine Wilber and her husband Luke Karpinski, both 41, died on Wednesday in the Sheffield, Massachusetts home along with their seven-year-old twins and a three-year-old child, officials said. Investigators believe that Karpinski murdered his family before killing himself, and that there is no ongoing threat to the public, Berkshire County District Attorney Andrea Harrington said at a press conference on Thursday evening. Wilber was a patent attorney working for a law firm in Albany, New York, while her husband was believed to be a patent analyst for the federal government. Investigators works at the scene of a fatal fire in Sheffield, Massachusetts on Thursday. Police responded to the fire at 7.50am on Wednesday and found five bodies inside Berkshire County District Attorney Andrea Harrington gave a brief press conference on Thursday to identify the deceased adults and confirm a suspected murder-suicide 'It is with grief and immeasurable sorrow that we learned of the death of our friend and colleague Justine M. Wilbur, who died with her family yesterday,' the law firm of Hoffman Warnick said in a statement to DailyMail.com. 'Justine was a talented attorney who joined our team in 2017 after having built a reputation both domestically and internationally as a patent expert. Her work was both meaningful and challenging having encompassed topics ranging from cancer treatment and nanotechnology to advanced materials. 'Justine was smart, knowledgeable, dedicated and hardworking. She was a devoted mother to her wonderful children, and a true friend to everyone in our firm. 'We are each devastated by loss and extraordinary sadness, but are comforted and grateful for having shared Justine's infectious spirit and energy. 'We pray for her family and those who loved her.' Fire crews arrived around 7.50am on Wednesday to find the home fully involved. After putting out the blaze they found one body initially and four others during a secondary search Karpinski and Wilbur purchased the lot that the home was later built on in June 2016 for $105,000, records show. Federal records show that a Luke E. Karpinski was employed as a Patent Examiner at the Patent and Trademark Office in Sheffield, with a salary of $109,116 in 2017. Fire crews responded to reports of the house fire at around 7.50am on Wednesday, finding one body initially and then four others during a secondary search. On Thursday, Harrington said that Wilbur's body was the first to be found, on the ground floor, and that the other four bodies were found together on the upper floor. The home was fully engulfed when fire crews arrived, taking nearly an hour to extinguish and allow for the searches. Berkshire County Sheriff Department officers close off the road on Wednesday in Sheffield to a home where investigators work at the scene of a house fire that killed five people DA Harrington would not specify the causes of death or answer reporters' questions at an initial press conference, saying only that the investigation was 'complicated.' 'This is an ongoing, extensive investigation with multiple local and state agencies, including the State Police,' Harrington said, according to the Berkshire Edge. In addition to local fire crews, spotted at the scene were several specialized criminal forensic units with the Massachusetts State Police. They included the Crime Scene Services Section, forensic scientists assigned to the Crime Laboratory, and the Collision Analysis and Reconstruction Section. The fire occurred on the 1300 block of Home Road, a thinly settled country route. https://www.youtube.com/embed/wp-YTu2Rrns?feature=oembedAll rights reserved for this news site dailymail and under his responsibility