On 13 October 2008, the Czech weekly Respekt prominently publicised an investigation carried out by the Czech Institute for Studies of Totalitarian Regimes, which alleged that Kundera had denounced a young Czech pilot, Miroslav Dvořáček, to the police in 1950. The accusation was based on a police station report which named "Milan Kundera, student, born 1.4.1929" as the informant in regard to Dvořáček's presence at a student dormitory; information about his defection from military service and residence in Germany was attributed in the report to Iva Militká. Dvořáček had fled Czechoslovakia after being ordered to join the infantry in the wake of a purge of the flight academy; he returned to Czechoslovakia as an agent of a spy agency organised by Czechoslovak exiles. The police report does not mention his activity as an agent. Dvořáček returned secretly to the student dormitory of a friend's former sweetheart, Iva Militká. Militká was dating (and later married) a fellow student Ivan Dlask, and Dlask knew Kundera. The police report states that Militká told Dlask of Dvořáček's presence, and that Dlask told Kundera, who told the police. Although the Communist prosecutor sought the death penalty, Dvořáček was sentenced to 22 years (as well as being charged 10,000 crowns, forfeiting property, and being stripped of civic rights). He ended up serving 14 years in a labor camp, some of it working in a uranium mine, before he was released.
After Respekt's report (which states that Kundera did not know Dvořáček), Kundera denied turning Dvořáček in to the police, stating he did not know him at all, and could not even recollect "Militská". On 14 October 2008, the Czech Security Forces Archive ruled out the possibility that the document could be a fake, but refused to make any interpretation about it. (Vojtech Ripka, of the Institute for the Study of Totalitarian Regimes, said, "There are two pieces of circumstantial evidence [the police report and its sub-file], but we, of course, cannot be one hundred percent sure. Unless we find all survivors, which is unfortunately impossible, it will not be complete." Ripka added that the signature on the police report matches the name of a man who worked in the corresponding National Security Corps section and that a police protocol is missing.)
On 3 November 2008, eleven internationally recognized writers came to Kundera's defence: these included four Nobel laureates—J. M. Coetzee, Gabriel García Márquez, Nadine Gordimer and Orhan Pamuk—as well as Carlos Fuentes, Juan Goytisolo, Philip Roth, Salman Rushdie and Jorge Semprún.