Thousands of tablets and vials containing anabolic steroids were seized on Monday during a police operation in the wider region of Thebes, central Greece.
The tablets had been hidden beneath olives in a metal container on a transport company truck.
According to reports, a total of 21,068 tablets and 2,971 vials containing anabolic steroids were confiscated.
Customs officials at Bulgaria's Danube Bridge 2 checkpoint in Vidin, at the border with Romania, have seized nearly 15,000 vials marked as containing anabolic steroids being smuggled in a Slovak-registered van.
The vehicle carried packages of dog food to Slovakia, according to the cargo manifest. The starting point of the trip was not disclosed.