"I would like to ask anybody that's out there if you know where [Levon Wameling] is, or if he's alive or dead, just please call the Utica police so I can put him to rest," mother Amy Warney told a Thursday news conference.
Utica police said they aren't satisfied with the explanation the baby's father, Jevon Wameling, 27, has given about why he waited two weeks before going to an attorney's office then calling police to report Levon's disappearance, CNN reported.
Levon was last seen at his home May 29.
"Based on the information that he's given us, we have a lot of concern," Utica Police Chief Mark Williams said.
The father told investigators he took the child for a late-night walk and locked himself out, CNN said. He said he put the child down on the front porch, went around back to find a way in and when he opened the front door, the baby was gone.
Williams said the father hasn't spoken with police since Tuesday, when he asked for an attorney. He has not been charged.
The National Center for Missing & Exploited Children's website described Levon as about 2 feet tall with having black hair and brown eyes.
Utica police did not identify where they were conducting their ground search, the Utica Observer-Dispatch said. Police also haven't said whether they believe Levon is still alive.
"I'm not going to get into where we're searching," Utica police Sgt. Steve Hauck said Thursday. "Hypothetically, if this kid was killed and dumped somewhere, I don't want to tip our hand where we're searching so someone can go and move the body."