A man has been arrested for allegedly killing his four-year-old son by throwing him on a platform at Sanpada railway station in Navi Mumbai, during an argument with his estranged wife, police said on Tuesday.

The accused Shakkalsing Pawar was arrested in connection with the incident that took place on platform no. 4 of Sanpada Railway station on Monday morning, an official from Vashi railway police station said.