Tehran צילום: iStock

At least 13 people were killed in an explosion at a medical center in Tehran Tuesday the Khabaronline news site reported Tuesday night.

Tehran Deputy Governor Hamid Reza Goudarzi told state TV that the explosion was caused by a gas leak.

Video posted on social media showed a large plume of black smoke rising from a building in the Iranian capital as well as additional explosions.

Another explosion occurred at a military base east of Tehran last Thursday. An Iranian defense ministry spokesman said the blast was caused by a tank leak at a gas storage facility.

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