in 1555, adil's brother in law, ibrahim shah suri of agra, revolted. adil shah's army was defeated and he lost the throne of delhi. soon, the empire founded by sher shah was divided into four parts. as delhi and agra came under the rule of ibrahim shah suri, only the territories from the vicinity of agra to bihar remained under adil. shamsuddin muhammad shah already declared independence of bengal in 1554. but hostility did not end with the division of empire.