At least 19 killed in gas blast at medical clinic in Iran capital

In a TV interview, Maleki said the explosion occurred as gas canisters caught fire in the clinic's basement. Some of the victims "were in upper floors in operation rooms, who were either patients being operated on or those with them," he said. "They unfortunately lost their lives due to the heat and thick smoke." The incident comes four days after an explosion near a military complex rocked the Iranian capital.