Kolkata: A man who was on the run after beheading his infant son in West Bengal's West Midnapore district has been arrested, police said Sunday.

The incident took place in Mathurahati village near Kharagpur earlier this month when the accused Biswajit Rana decapitated his one-and-a-half-year-old son and threw the body in a ditch.

"We arrested Rana last (Saturday) night and presented him before a court today (Sunday) which remanded him to two days police custody," said sub-divisional police officer (Kharagpur) Santosh Mandal.

According to the police complaint filed by the mother, Rana suspected the child to be illegitimate and following an argument, he snatched the baby from her and went away. The child's decapitated body was found lying in a ditch Dec 20.