Jason Chapdelaine is charged with murder and was ordered held without bail for allegedly killing a mother of two on Sunday, April 14, Hampden County authorities said.
A not guilty plea was entered on his behalf during his arraignment.
Eileen Monaghan, 48, of Chicopee, was found dead around 1:30 a.m. She had been stabbed, police said.
Chapdelaine was found nearby at the 200 block home on South Water Street home, bleeding from what police say were self-inflicted stab wounds.
The two had dated.
Monaghan was later identified as the personal assistant to Hampden County Sheriff Nick Cocchi.
Click here to follow Daily Voice Amherst and receive free news updates.