Tremors from the quake that centred in the northwestern Iranian city of Khoy were also felt in Turkey's Van province.
Fahrettin Koca said that the condition of nine of the injured is serious.
Interior Minister Suleyman Soylu said that some buildings were damaged in various villages in the Baskale district of the province.
The most damage-prone constructions in the area were mud houses which locals build.
The interior minister also briefed President Recep Tayyip Erdogan about the ongoing search and rescue efforts, according to the Presidential Communications Directorate.
Iran and Turkey are among the most earthquake-prone countries in the world. Last month, an earthquake in the eastern Turkish province of Elazig killed more than 40 people.
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