Alavi underscored that since the beginning of the tragic incident in the Plasco Trade Center, the intelligence forces have been present in the scene.
According to ILNA, he reiterated that more investigations would be conducted in this respect in near future.
The 17-storey Plasco Trade Center collapsed in Tehran on Thursday morning, January 19, as firefighters were trying to contain fire in the building.
5 people have lost their lives so far and some 25, most of them firefighters, are still under the rubble.