Bergen County prosecutors say 22-year-old Mark Spatucci entered a Waldwick home through a second-floor window and strangled Mary Greff, 23, as their baby slept in a crib in the same room. Greff was found dead early Wednesday in her bedroom at her parents' home.
Spatucci entered his pleas Friday morning during a brief court hearing. He's charged with murder, burglary, child endangerment and hindering apprehension. He's being held on $2 million bond.
Prosecutors said Greff and Spatucci began dating two years ago, that she gave birth in February and that the two had lived together for a short time before she split from him and moved in with her parents.
Investigators believe Spatucci drove to the Greff residence late Tuesday and entered, undetected, through a second-floor window. Once inside Greff's bedroom, prosecutors say an argument turned violent and Spatucci killed her, leaving the body on the bed.
Greff's parents were believed to be asleep in another part of the house. Her father found her dead early Wednesday, police said.
Prosecutors said Spatucci had court-ordered custody visitation with the infant but Greff had full custody