In 1977, a split in the Uganda Army developed between supporters of Amin and soldiers loyal to the Ugandan Vice-President, General Mustafa Adrisi, who held significant power in the government and wanted to purge foreigners, particularly Sudanese, from the military. By 1978, the number of Amin's supporters and close associates had shrunk significantly, and he faced increasing dissent from the populace within Uganda as the economy and infrastructure collapsed as a result of the years of neglect and abuse. After the killings of Bishop Luwum and ministers Oryema and Oboth Ofumbi in 1977, several of Amin's ministers defected or fled into exile. In early 1978, Adrisi was severely injured in a car accident and flown to Cairo for treatment. While he was there, Amin stripped him of his positions as Minister of Defence and Minister of Home Affairs and denounced him for retiring senior prison officials without his knowledge. Amin then proceeded to purge several high-ranking officials from his government and took personal control of several ministerial portfolios. The shakeup caused political unrest and especially angered Adrisi's followers, who believed that the car accident was a failed assassination attempt.