AGRA, March 19 -- A woman and her two children were killed after a wall of their house collapsed on them while they were sleeping on the intervening night of Tuesday and Wednesday. The incident took place in a village under Kurawali police station limits of Mainpuri. Three others sustained injuries. Additional superintendent of police (City) Arun Kumar Singh said six members of the family were sleeping near a kuchha wall when it, along with a tin shade resting on it, suddenly collapsed, trapping them under debris. Police said the house was around 80 years old and construction work was underway in the rear portion. The deceased were Ruby ,40, her son Dileep ,8, and daughter Devi ,13. The injured Brajesh ,50, and his daughters Gudia ,15, and Pallavi ,5, are out of danger....