Kalat finally acceded to Pakistan on 27 March 1948 after period of negotiations with Pakistan. The signing of the Instrument of Accession by Ahmad Yar Khan, led his brother, Prince Abdul Karim, to revolt against his brother's decision due to their family rift. in July 1948. Princes Agha Abdul Karim Baloch and Muhammad Rahim, refused to lay down arms, leading the Dosht-e Jhalawan in unconventional attacks on the army until 1950. The Prince indulged in Terror activities without any assistance from others. Jinnah and his successors allowed Yar Khan to retain his title until the province's dissolution in 1955.