A Bronx man got on a plane to Thailand after carrying his dead 7-month-old baby around New York City in a backpack and then throwing the body into the East River near the Brooklyn Bridge, New York police said on Wednesday.
Thai Immigration Bureau spokesman Cherngron Rimpadee said on Thursday Thai authorities were alerted by American immigration and stopped the man, identified as James Currie, 37, at Suvarnabhumi airport.
He was deported back to the US via New Delhi, the route he took to Bangkok.
New York Police Department chief of detectives Dermot Shea said Mr Currie will be returned to New York within days to face a felony charge of concealment of a human corpse.
The boy's body was found on Sunday by an Oklahoma tourist.
While the baby's cause of death remains unknown, the New York Daily News reported that police suspect the father murdered the infant in his Bronx apartment.
Pol Chief Shea said the baby was alive when Mr Currie took him to the apartment on Saturday under a custody arrangement and died sometime before the father left the building and headed for Manhattan the next day.
Video showed Mr Currie walking toward the river and carrying the baby in a backpack, which he had fashioned as a baby carrier. A backpack was later seen floating in the river near the boy's body. bangkok post/ap