A police constable allegedly shot himself dead using a government rifle after his wife hanged herself following an argument between the couple in a village in Uttar Pradesh's Chitrakoot district, police said on Tuesday.

Kusum Devi (24), wife of 35-year-old constable Mayank Kumar Patel, hanged herself at their house in Devkali village of Raipura police station area after midnight on Monday, SHO Raipura Shailendra Pandey said.