 Soviet psychiatrists from commissions instituted to inquire into his sanity diagnosed him at least three times — in April 1964, August 1969, and November 1969.When arrested, Grigorenko was sent to Moscow's Lubyanka prison, and from there for psychiatric examination to the Serbsky Institute where the first commission, which included Snezhnevsky and Lunts, diagnosed him as suffering from the mental disease in the form of a paranoid delusional development of his personality, accompanied by early signs of cerebral arteriosclerosis.Lunts, reporting later on this diagnosis, mentioned that the symptoms of paranoid development were "an overestimation of his own personality reaching messianic proportions" and "reformist ideas."