The bodies of five civilians were found with their hands tied in the village of Motyzhyn, west of Kyiv, including those of the mayor, her husband and son, Ukrainian authorities have said.
Police showed journalists from Agence France-Presse four bodies, including that of the mayor, half buried in a grave in a pine forest bordering her house in Motyzhyn.
A fifth body was found in a little well in the garden.
The dead, including two men not part of the mayor’s family, reportedly had their hands tied behind their backs.
The mayor, Olga Sukhenko aged 50, her husband and their son, were abducted by Russian troops on 24 March, police said.
Residents said the mayor and her husband had refused to collaborate with the invading Russian forces.