Vadim Stroykin, 58, plunged to his death from the 10th floor of his St. Petersburg apartment building on Wednesday after cops came to interrogate him about the alleged donations and other claims

Russian singer-songwriter Vadim Stroykin died on Feb. 6 while security officials were raiding his apartment, the Russian human rights NGO OVD-Info reported. Stroykin reportedly fell out of a window while officers were visiting his home as part of a criminal investigation into the singer's alleged donation to Ukraine's Armed Forces.