Additional investigation into the circumstances of the massacre was opposed by the communist regime until the era of Solidarity, when in December 1981 an article was published in the "Solidarity" newspaper "Tygodnik Solidarność". However, the return of repressive government meant that files could not be accessed for research until after the fall of Communism in 1989, by which time many eyewitnesses had died. It was then discovered that many of the documents relating to the pogrom had been allegedly destroyed by fire or deliberately by military authorities.