Bulgaria could become the second country in the region to oust the Czech electricity company CEZ, after violent protests against hefty electricity bills led to the PM's resignation.

Bulgaria's exports to non-EU countries increased by more than 10 percent in the first half of the year, totaling nearly 7 billion euros.

Foreign nationals can obtain citizenship if they invest at least half a million euro in a company involved in a high-priority investment project, parliament says.

Bulgaria's government will decide this week on its investment in the construction of the South Stream pipeline, President Rosen Plevneliev has announced.

Russia's state nuclear corporation Rosatom is "open" to talks and an out-of-court settlement with Bulgaria over its one billion euro international arbitration suit.

A large number of Eastern Europe's workers and firms are engaged in the 'shadow economy' and Bulgaria tops the blacklist, a World Bank report shows.