Viasna Human Rights Centre
Belarus · Viasna
01Overview
Quick Facts
CountryBelarus
Age / Sex28 · male
Occupation—
Arrested inMinsk, Minsk region
Held atPenal Colony No. 1 Navapolatsk
CategorySocial media
StatusConvicted
Sentence6 years
Belarus · context
1,277documented cases
393 urgent · 116 report torture
Most common grounds
Journalism
101
Legal Profession
11
Medical
2
Culture
1
Reports of Torture or Ill-treatment.
Subjected to physical abuse or severe ill-treatment in detention. Violation of international law.
Case Summary
Arciom Kasakouski, an optician, was a key figure in the 'Chat Case' involving Telegram group participants. He was sentenced to a total of 6.5 years in prison for his involvement in protests and chat activities. He is also listed as a person involved in terrorist activities by the KGB.
Native-Language SummaryBE • Original
Арцём Касакоўскі, аптык, быў ключавым фігурантам «справы чата», якая тычылася ўдзельнікаў тэлеграм-чатаў. Ён быў асуджаны агулам да 6,5 гадоў зняволення за ўдзел у пратэстах і дзейнасць у чатах. КДБ таксама ўключыў яго ў спіс асоб, датычных да тэрарыстычнай дзейнасці.
02Charges
Charges
04 count- 01Participation in mass riots
- 02Organization and preparation of actions that grossly violate public order
- 03Violence or threat of violence against an official
- 04Arson or property damage
Criminal Code Articles
04 articleArt. BY-293Art. BY-342Art. BY-364Art. BY-341
03Analysis
Predicting Vector
Surveillance vector
Surveillance vectorSocial Media Monitoring
Technology usedTelegram
04Timeline
Case Timeline
Arrest date
September 27, 2020
Sentence served
5y 9mo / 6 years
05Sources
Data Source
Source vs. PPW analysis
ViasnaCase facts, charges, dates, and status.
PPW analysisRisk, surveillance & sentence estimates — probabilistic, not the source's reporting.
View all data sources →§ Updates
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Cite this case
Political Prisoner Watch. (2026). Case file: Arciom Kasakouski (PPW case cmmkyidg). Retrieved July 6, 2026, from https://politicalprisonerwatch.org/prisoners/cmmkyidg7002c1vcfpdu9j64a. Original data from Viasna Human Rights Centre (https://prisoners.spring96.org/en/person/arciom-kasakouski).
Formats reflect this case as an online database record. Always verify the original source before citing in legal filings.