Prosecutors in Portugal have launched an investigation into the death of Pavlo Sadokha, a 56-year-old Ukrainian activist known for his strong criticism of Russian President Vladimir Putin. Sadokha was found dead on Sunday in the coastal town of Quarteira, near the tourist area of Vilamoura, during a work trip. Local police arrived at the scene and found no signs of a crime, later confirming that Sadokha had a history of heart problems. Despite this, Portugal's Public Prosecution Service has initiated a probe to determine whether any third parties may have been involved in his death. Friends and family members told the Portuguese newspaper Correio da Manha that Sadokha's health had been "perfectly under control," and he had recently undergone medical tests. Mykola Shymonyak, the vice-president of the organization Sadokha led at the time of his death, said the group had pushed for a full autopsy to examine all possible causes of his death. An initial autopsy was conducted, but toxicology results from blood and tissue samples will take approximately three to four weeks to be released. Sadokha had lived in Portugal for over 20 years and was a prominent figure in the Ukrainian community there. The Ukrainian World Congress (UWC), an international organization representing Ukrainians abroad, expressed deep sorrow over his passing, stating that Sadokha had dedicated his life to Ukraine and its diaspora in Portugal. He was a key leader in the UWC and played a central role in founding the Ukrainian Youth Association (CYM) in Portugal. He was also active in organizing solidarity events during the 2013-2014 Euromaidan protests and has continued to support Ukraine through rallies, appeals to Portuguese officials, and aid for Ukrainian defenders since Russia's invasion in 2022. UWC President Paul Grod described Sadokha as a respected leader within the Ukrainian community and a close personal friend. He praised Sadokha for his unwavering commitment to Ukraine and its people worldwide, calling his death a significant loss. Sadokha was also known for his vocal activism against Russian influence, including protests in Tenerife, Spain, where he accused Russian-backed groups of militarizing children through Soviet-style activities. He also led demonstrations in Portugal against Brazilian President Lula da Silva in 2023, after the latter suggested both Ukraine and Russia were to blame for the ongoing conflict. At the time, Sadokha emphasized the urgent need for international support for Ukraine, as civilians continued to suffer from the war.