Syrian President Bashar al-Assad accused Turkish Prime Minister Recep Tayyip Erdoğan of not having said "a single word of truth" about Syria's conflict, in an interview with Turkish media posted on the web, Hurriyet Daily news reported.

"Erdoğan has not said a single word of truth since the beginning of the crisis in Syria," Assad told journalists working for Turkish television Ulusal and Aydinlik newspaper.

The interview with Assad was conducted on Tuesday, April 2 and is to run on Friday, according to the president's YouTube channel.

In another extract from the interview, Assad condemned the killing on March 21 of prominent pro-regime Sunni cleric Mohammed Saeed al-Bouti as part of a plan to sow "sectarian strife" in Syria.

"There is no doubt that the role of clerics, including Dr Bouti, was key to ensuring the failure of a covert plan to create sectarian strife. That's why they assassinated Dr Bouti," Assad said.