A Greek junior cabinet minister has resigned over comments in which he inferred that leftwing Prime Minister Alexis Tsipras misled protesting farmers by promising, before last year's elections, to improve their situation.

Deputy Transport Minister Panagiotis Sgouridis, who belongs to Tsipras' rightwing junior coalition partner, issued a statement Tuesday thanking Tsipras for accepting his resignation.

He pledged to continue to back the coalition government, which has a slender majority of three seats in the 300-strong Parliament.

In a local radio interview last week, Sgouridis said Tsipras had "misled" farmers "like previous prime ministers."

He added that "if you don't make promises you won't get votes." Sgouridis later said an "unfortunate" part of the interview was given undue prominence. Farmers have blocked highways for weeks to protest pension and tax reforms.