ATHENS, Greece—Police say they have arrested three people in connection with an armed robbery that targeted the Archaeological Museum of Olympia, the birthplace of the ancient Olympics.

The three men were arrested Friday in the western Greek city of Patras, close to Ancient Olympia.

They were arrested after they tried to sell the most ancient of the antiquities, a golden seal-ring dating from the late Bronze Age, about 3,200 years ago, for an initial asking price of (EURO)1 million ($1.3 million).

Police recovered all 76 artifacts stolen from the museum by two masked robbers on Feb. 17, 2012. They were found buried in a field 3 kilometers (2 miles) from the museum on Friday.