Bulgaria's government said that it decided to cancel a tender for natural gas and petroleum exploration in Block 1-26 Tervel, in the Black Sea.
No candidates expressed interest in the project by the deadline for submitting offers, the government said in a statement published after its weekly meeting on Wednesday.
The tender procedure for awarding a five-year oil and gas exploration permit for Block 1-26 Tervel was launched in August 2019.
Block 1-26 Tervel, spreading on 4,032 sq km, is part of the larger exploration block Burgas - Deep Sea.
U.S.-based Vintage Petroleum International carried out exploration works at the block between 2002 and 2008 but did not drill any exploration wells.