A Google employee was found dead after going for a run in woods near her mother’s home in Massachusetts.
The body of Vanessa Marcotte, 27, was found by sniffer dogs on Sunday evening in a “horrible set of circumstances”, authorities said.
District Attorney Joseph Early said: “People should be concerned, we are asking them to use an abundance of caution.
“We have a horrible set of facts, horrible set of circumstances and we are going to do everything we can to make sure that this investigation is carried out.”
Ms Marcotte, who worked for Google in New York city, was discovered with burns on her hands and feet and police are investigating a sexual assault.
A Google spokesman said: “Vanessa Marcotte was a much-loved member of the Google team, working in our New York office for the last year and a half, and known for her ubiquitous smile, passion for volunteer work and love of Boston sports.
“We are deeply shocked and saddened, and our thoughts are with her family and friends.”
It comes just a week after a similar murder in New York City, where Karina Vetrano, 30, was found sexually assaulted and strangled near her home after going for a run.
Her mother Cathy had a chilling message for the fugitive killer at a press conference on Sunday, stating: “I guarantee you – you will pay forever.”
Mr Early said there is “nothing at this point” to connect the murder to that of Ms Vetrano last week, who was also killed while jogging near her home in Queens, New York.
