Iran's authorities have restricted mobile internet access in several provinces, an Iranian news agency reported on Wednesday, a day before new protests were expected to kick off following calls for demonstrations on social media.

Social media posts, along with some relatives of people killed in unrest last month, have called for renewed protests and for ceremonies to commemorate the dead to be held on Thursday.

A senior official in the office of Ayatollah Ali Khamenei denied a report that the supreme leader had ordered President Hassan Rouhani to crack down on protesters, according to the semiofficial Iranian Students' News Agency.