Officials mentioned it was an incident which happened as troops have been moving munitions for a base in Bidganeh, near the town of Shahriar, some forty five km (28 miles) west of Tehran.
While there seemed to be no indication from a attack, the explosion shook real estate and rattled windows for miles all around at this time of mounting tensions with Israel through Iran's nuclear software.
"So much, 27 personnel of Innovative Guards are actually martyred and 16 other people wounded, several of choices inside of a significant issue," IRIB quoted Groundbreaking Guards spokesman Ramezan Sharif as saying.
"Today at 13:30, (0900 GMT), a surge transpired in a single on the Revolutionary Guards' bases though a consignment of explosive units was remaining moved out from the arsenal, besides that some munitions inside arsenal exploded which made a terrifying sound," Sharif said.
Citizens in western suburbs of Tehran advised Reuters that they had felt the blast, by assuming it to be a low-level earthquake.
Fireplace with the base continued to rage for hours. Bordering streets had been closed and reporters have been kept away from the scene.
Some media documented there was two explosions plus the head of Iran's Red Crescent business explained there were a risk of even more blasts.
Mahmoud Mozafar informed the Mehr news agency that only 6 paramedics has been authorized into your Amir Al-Momenin army base which thick smoke was hampering the rescue operation.
There were no studies linking the blast to the air strike or another attack. Stress has risen in recent weeks between Iran with its enemies Israel as well as the Usa, which have not ruled out striking facilities they consider are doing work towards generating nuclear weapons.
Sharif denied what he explained was speculation within the Western media that the military base was linked to Iran's nuclear program.
"This blast is simply not related to any nuclear exams that some foreign media have reported," he told Mehr.
Tehran denies Western accusations, which were supplied some credence by way of a report in the UN nuclear agency now, the reason is nuclear application has army ends.
On October twelve previous 12 months an identical blast in a Innovative Guards munitions keep killed and wounded several servicemen in Khoramabad, western Iran. Authorities said that explosion was an accident.