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.
More top news
Showers in the north. Fine in the south
A British man was injured in a suspected terror attack in Finland in which two people were killed, the Government has said.
Jeremy Hunt has rejected Professor Stephen Hawking's claim that he "abused" scientific research to justify the creation of a seven-day NHS.