Police in Paraguay have launched an investigation into the death of a Hong Kong-born cryptocurrency fund executive as speculation swirled over the case. Experts on Wednesday also warned of a global rise in violent extortion attempts targeting digital asset holders, a phenomenon known as “wrench attacks”. Paraguayan police are investigating the death of Harry Yeh Chun-tak, who was found dead outside his residential building in Asuncion after a suspected fall from his 30th-floor flat earlier this week. According to a Paraguayan newspaper on Sunday, Yeh’s body was found at the foot of the Jade Park residential complex in the capital city’s Trinidad neighbourhood. Investigators who entered the 30th-floor flat where Yeh was believed to live found the doors open and the interior in disarray.