A desperate search is underway for 4-year-old, Marc Anthony Bookal. The toddler vanished more than 48 hours ago from his Newburgh, NY home, while under the care of his mother’s boyfriend, Cory Byrd. Byrd, whose history includes a criminal conviction for reckless child endangerment, told cops that Marc vanished just before he was to take the boy to visit a relative.

Marc Bookal / Courtesy: City of Newburgh Police Dept.

Today cops are combing areas near the boy’s home, including a waterfront and a local cemetery. The Hudson River is located approximately five blocks from the home where Marc was last seen. Investigators are also going door-to-door and checking abandoned buildings for any sign of the toddler.

An Amber Alert was not issued, police say, because there is no witnessed abduction in the case and because no vehicle is believed to be involved in Marc’s disappearance. Marc weighs 42 pounds and stands 3-and-a-half feet tall. He was wearing a red, long-sleeve shirt, gray Rocawear sweatpants and Nike Uptown sneakers when he was last seen. Anyone with information about the case is asked to call the Newburgh Police Department at (800) 346-3543. Stay connected to Nancy Grace’s Web blog for updates and tune in tonight to Nancy Grace on HLN, 8pm Eastern, for the latest details.