Mary Fox, 38, was ordered held without bail on charges she fatally stabbed Michael Dezrick in Clifford Playground on Massachusetts Avenue following what the Suffolk County district attorney called an "insignificant" argument.
According to the DA's office, Fox and Michael Dezrick, 48, argued about something in Clifford Park late Monday night, then returned around midnight with a knife.
Live Boston reports:
Multiple eye witnesses describe to us a terrifying scene as Fox jumped a man without warning who was selling refreshments in the park stabbing him while he was already on the ground.
Dezrick was taken to nearby Boston Medical Center, where he was pronounced dead. Police found and arrested a grinning Fox about 20 minutes after the stabbing.
According to the DA's office, Fox was already out on bail on charges of possession of a dangerous weapon, a knife and stealing a car in Boston Municipal Court and on a charge of possession of a dangerous weapon in Dedham District Court. Her bail on those charges was revoked.