Jerusalem Post 
May 7, 2013
Three explosions were heard in western Tehran on Tuesday, in an area where Iran carries out missile research and storage, according to a Tweet by a BBC Persian journalist.
It was not immediately clear if there were injuries or damage in the incident.
In January, both Iran and the International Atomic Energy Agency denied reports that a blast had hit the Fordow underground uranium enrichment  center near Qom.
A mysterious and massive explosion rocked a military arms depot near Tehran in November 2011 , killing 17 Revolutionary Guards Corps officers and wounding 17 others.