The body of a kidnapped Ukrainian journalist who played an active role in protests that led to president Viktor Yanukovych's removal in February has been found in a forest 60 miles outside the capital, Kiev, authorities said.
Cherkassk province prosecutors said Vasily Sergiyenko was abducted in his home city of Korsun-Shevchenkivskyi on Friday evening, and later murdered.
The nationalist Svoboda party, of which Mr Sergiyenko was a member, said the reporter was found with stab wounds and signs he had been beaten about the head and knees.
Svoboda said the killing bears the hallmarks of a politically-motivated hit.
The party, whose leader Oleh Tyahnybok is running in the May 25 presidential election, said Mr Sergiyenko and other Svoboda representatives had received threats over the past week.