Nitheeswaran (28) used to quarrel regularly with his wife of four months, Vanitha (21), who he had married after she bacame pregnant, police said.
The couple had another argument today, following which Nitheeswaran allegedly smashed the baby against the wall, killing him in the process, police said.
Nitheeswaran was arrested and booked under section 302 of the IPC (Murder), they added.
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