Anna Paniszewa is the director of the Polska Szkoła school based in Brest.

On March 10, the authorities opened a criminal case to investigate "heroization of war criminals." According to the prosecutor's office, the case was initiated after a group of persons committed intentional actions aimed at inciting national, religious and ethnic hatred on the basis of national, religious, linguistic affiliation, and committing intentional actions to rehabilitate Nazism (Art. 130 of the Criminal Code). The prosecutor's office said that on February 28 an illegal mass event was held in a room rented by the Brest Forum of Polish Local Initiatives and the Polish School with the participation of minors and youths. "Young people wearing uniforms of the Polish Scout Organization sang songs and recited poems in honor of war criminals, including Romuald Rajs, known as Bury," the prosecutor's office said.

On March 11, the co-founder of the Polish School was detained, but later released on bail as a suspect. On March 12, upon returning to Belarus, school director Anna Paniszewa was detained. She was placed in pre-trial detention center No. 7 in Brest and charged under Art. 130 of the Criminal Code.

On June 2, 2021, Agnieszka Romaszewska-Guzy, director the Poland-based Belarusian TV channel Belsat, said that three out of five Poles imprisoned in Belarus, Maria Tiszkowska, Irena Biernacka and Anna Paniszewa, had been deported to Poland, despite having a Belarusian citizenship.

After her release, Paniszewa said she had been beaten during the arrest and had not been treated for two months. As a result, she had to use crutches. She also reported psychological torture in prison.