Officers in upstate New York are pressing their search for a 4-year-old boy who police say wandered away from the family apartment while under the care of his mom's boyfriend.

Police say Marc Anthony Bookal vanished from the Newburgh apartment Monday. They've been using dogs and dive teams have been checking the nearby Hudson River but on Thursday reported no new information in the case.

Cory Byrd, the boyfriend of Marc's mother, has been charged with endangering the welfare of a child. The 30-year-old Byrd also was charged with a parole violation. He's being held in Orange County Jail.

Police haven't called Byrd a suspect in the boy's disappearance.

Newburgh is about 60 miles north of New York City and has one of the highest crime rates in the state.