The Bulgarian President Rosen Plevneliev was quoted by the national news agency as saying that he received no advance warning of an expected attack when he held a meeting with Israel's intelligence agency, Mossad, last month.
He said that the two countries' intelligence agencies share a good relationship and that he would have acted on any lead.
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The official Brexit campaign "cheated" during the European Union referendum to get around spending limits, a whistleblower has claimed.
A cloudy and damp start for many southeastern areas, but turning brighter through the afternoon.
Countries have been switching off their lights for Earth Hour, a global call for international unity on the importance of climate change.