Anton Melkher was arrested on terrorism charges together with his mother Iryna Melkher.

In February 2021, the KGB put her on the list of persons involved in terrorist activities.

Anton Melkher was sentenced to two and a half years of imprisonment in a general-security penal colony for ‘active participation in actions that grossly violate the public order’ (Part 1 of Article 342). He was released in the courtroom because his detention was credited to his sentence.

The defendants in the case were political activist Mikalai Autukhovich, priest Siarhei Rezanovich, his wife Liubou Rezanovich, their son Pavel Rezanovich, pensioner Halina Dzerbysh, activist Uladzimir Hundar, activist Volha Mayorava, pensioner Iryna Melkher and her son Anton Melkher, and Iryna Harachkina, Viktar Snehur and Pavel Sava. They have been held behind bars for 22 months. Only two of them fully admitted their guilt.  All of them were detained in December–January 2020. The authorities immediately declared Autukhovich the organizer and leader of a “terrorist group” that operated in the Hrodna region and allegedly set police officers’ cars and houses on fire.

The trial lasted five months. The verdict was pronounced on October 17, 2022, in the Hrodna Regional Court. Judge Maksim Filatau imposed jail terms ranging from two and a half to 25 years. Deputy chair of the prosecutor's office Liudmila Herasimenka and senior assistant prosecutor Rabau represented the state prosecution at the trial. The people's assessors were Stavorka, Zhdanovich, and Nichypor.

Mikalai Autukhovich gets 25 years in jail, members of his ‘group’—up to 20

On October 17, 2022, the Hrodna Regional Court pronounced the verdicts on the high-profile Autukhovich case. The trial lasted five months. Judge Maksim Filatau imposed jail terms ranging from two and a half to 25 years.