Belgrade - The grandfather of Jelena Djokovic, the wife of Novak Djokovic, has been found tied up in a field after unknown assailants broke into his house in central Serbia.
Djokovic's press team says in a statement on Thursday the family is in "complete shock over what happened" to 85-year-old Miloslav Radisavljevic.
They say attackers broke into Radisavljevic's house, kidnapped him, and took him to a field several kilometres away.
Police said, without identifying Radisavljevic, they found a man early on Thursday tied to a power pole close to his house in Ljig, some 50km south of Belgrade.
The man told the police he was also robbed by the two masked assailants of about £220 and a cellphone. Police say the man had no visible injuries.