The couple and their children, aged between two and four, were travelling in an auto-rickshaw in Vemulawada town when B Ravi slit his 32-year-old wife Vasantha's throat with a knife.
Thereafter, he tried to cut his own throat but survived. He was admitted to a local hospital in a critical condition. A case has been registered.
The family was going to Vasantha's parental house on Bathukamma flower festival.