A powerful explosion at a medical clinic in northern Tehran has killed at least 13 people and injured six others, Iranian media report.
Tehran prosecutor Ali Alqasimehr was quoted as saying on June 30 that 10 men and three women were killed in the blast at the Sina At'har health center.
Alqasimehr said that those injured were transferred to Tajrish hospital for medical treatment.
Deputy Tehran Governor Hamidreza Goudarzi told state television that a leak from medical gas tanks in the building was the cause of the explosion and ensuring fire.
Firefighters were still battling the blaze late into the evening.
Ambulances were deployed to the site while police blocked off all roads leading to it.
Video posted online appeared to show more than one explosion and thick black smoke rising into the sky.
State TV reported there could be more blasts because there were a number of oxygen tanks remaining in the clinic.
Based on reporting by AP, AFP, and Reuters
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