Authorities in Massachusetts have filed murder and attempted murder charges against a man who they say killed his 20-year-old girlfriend before going to a family party. When he arrived at the party, he allegedly stabbed both of his parents.
A prosecution source confirms to PEOPLE Benjamin Walsh remains in custody as the sole suspect in the murder of Olivia Bergstrom.
Bergstrom’s body was found in Walsh’s apartment in Needham on Saturday evening. She had been stabbed to death, the prosecution source tells PEOPLE.
• Want to keep up with the latest crime coverage? Click here to get breaking crime news, ongoing trial coverage and details of intriguing unsolved cases in the True Crime Newsletter.
Millis Police arrested the 24-year-old Walsh Saturday night