Kashmir Conspiracy Case was the legal case filed by Government of Kashmir and Investigations Department of the Government of India, by which Sheikh Abdullah and others were arrested and jailed. Abdullah along with Mirza Afzal Beg and 22 others, who were accused of conspiracy against the state for allegedly espousing the cause of an independent Kashmir. The case was framed in 1958, for which trial began in 1959 was withdrawn in 1964 as a diplomatic decision.
On 8 August 1953 Sheikh Abdullah was dismissed as Prime Minister by the then Sadr-i-Riyasat (Constitutional Head of State) Dr. Karan Singh son of the erstwhile Maharajah Hari Singh on the charge that he had lost the confidence of his cabinet He was denied the opportunity to prove his majority on the floor of the house. and Bakshi Ghulam Mohammed was appointed as Prime Minister. He was arrested soon after in year 1953 for anti-national activities.
Following the overthrow of Sheikh Abdullah, his lieutenant Mirza Afzal Beg formed the Plebiscite Front on 9 August 1955 to fight for the plebiscite demand and the unconditional release of Sheikh Abdullah who had been arrested after his removal. Abdullah meanwhile was released for a short time and later again re-arrested for the activities of the Plebiscite Front eventually led to the institution of the Kashmir Conspiracy Case in 1958 and two other cases. Sheikh Abdullah was immediately arrested and later jailed again thus spending almost eleven years, accused of conspiracy against the State in the infamous "Kashmir Conspiracy Case".
Bakshi Ghulam Mohammad, who was installed as Prime Minister of Jammu & Kashmir, said in his radio broadcast that :-
Before his dismissal, arrest, brief release and re-arrest under the case, the intelligence agency had collected ample proof regarding the Sheikh's links with Pakistan and of his speeches and activities to these affect, after which Bakshi rearrested Sheikh Abdullah. The entire matter relating to the alleged conspiracy of the Sheikh for joining hands with Pakistan was submitted to Nehru along with documentary evidence and recorded tapes of his public speeches. Jawaharlal Nehru was taken aback while listening to the tapes and going through the letters of Sheikh Abdullah. He approved launching of a case against the Sheikh, his one time very close friend. Thus, the Kashmir conspiracy case was launched against Sheikh Abdullah, Mirza Afzal Beg and 22 other people on charge of having conspired with Pakistan for making of an independent Kashmir.