Mansa, Oct. 21 -- A 40-year-old Punjab Police constable and his minor son were killed, while his wife (37) and another son (17) were critically injured in a shooting at their house in Mansa on Tuesday morning, police said. The constable's wife and their second son sustained serious gunshot wounds and were admitted to the AIIMS, Bathinda. The constable was a gunman of the Mansa deputy commissioner. Mansa SSP Vaibhav Chaudhary said the incident occurred around 7am. Initial probe indicates the constable opened fire on his family following a domestic dispute before shooting himself. htc...