Tehran's city council on Sunday narrowly elected incumbent conservative mayor Mohammad Baqer Qalibaf to continue his duties for a third four-year term, Iranian news agencies reported.
He won 16 votes out of 31 in a special mayoral election held by the reformist-dominated city council, Iranian media reported.
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His main rival was Mohsen Hashemi, eldest son of influential ex-president Akbar Hashemi Rafsanjani, who managed to gain 14 votes, the reports said.
Qalibaf, a former Revolutionary Guards commander and ex-national police chief, has been mayor of the Iranian capital, home to more than 12 million residents, since 2005.
His bid for presidency in the June 14 national elections was thwarted after he lost by a large margin to moderate President Hassan Rowhani.
The city council began its tenure earlier in the week when it elected reformist Ahmad Masjed Jamei as its head.