Police said Muthuselvan (34) had slapped his wife Anitha Arockiamary, an SI working in the anti-landgrabbing cases wing, because she scolded his sister who jocularly asked her daughter to take money from her grand-father's pocket.
Police said there was a heated exchange between his sister and Anitha,and later the former had complained to Muthuselvan.
Anitha was admitted to hospital and on a complaint from her, police arrested Muthuselvan.
He was remanded to judicial custody today. Muthuselvan had marred her when he was a constable. He is not working in the police department now.
