The killer of the married couple, whose dead bodies were found in a vineyard in Bulgaria's village of Novo selo, was arrested, police authorities reported on Wednesday.
The 77-year-old criminal made full confessions about shooting his two victims dead after a quarrel.
Vesselin Darvenov, 47 and his wife Galina Darvenova, 50, were found dead by a fellow-villager near the main Sofia-Varna road that crosses Novo selo.
The culprit was detained for 72 hours in a local police station. Prosecutors are now to demand his imprisonment before the Regional Court.