 Baba Banda Singh Bahadur and his Sikh army in 1710 destroyed the city of Sirhind completely and Wazir Khan the governor, was killed in the Battle of Chappar Chiri.Sikhs occupied Sirhind and made Bhai Baj Singh the governor.Under the orders of the faujdar, Nawab Wazir Khan, Guru Gobind Singh's two younger sons, aged nine and five, were cruelly done to death.