Vincennes police Chief Dusty Luking told WTHI-TV in Terre Haute that Baldwin strangled and suffocated the boy.
"He is not remorseful for what he did," Luking told the news station. "That's my opinion, but this man is a monster."
The chief choked up as he talked about the “heart-wrenching” scene that emergency responders found at the home.
“To think about what that child must have gone through is heartbreaking,” the chief said. “At this point, there’s no reason to believe anything happened other than he intentionally planned out and killed his son.”
A neighbor who babysat the boy told WTHI-TV that he was a sweet, smart child.
“He was very sweet, very well-mannered, very smart. He was so so sweet," Diane Dunagan told the station.
The attempted murder charge against Baldwin is expected to be upgraded to murder now that his son has died.