4 people died and at least a dozen were wounded by the rockets launched by the blast at the weapons facility in eastern Baghdad.
The blast occurred in the morning after a weapon storage hit by bomb in al-Obeidi neighborhood, a stronghold of Shiite militant groups in eastern Baghdad near Sadr City.
These weapons are used by Shiite militias in the battles against the extremist Islamic State (ISIS, ISIL, IS and Daesh) militant group, the source added.
Explosions rock northeastern neighborhoods of Baghdad as tens of thousands from across Iraq and abroad converge on a shrine to commemorate the martyrdom anniversary of a Shia Imam.
Preparations in the al-Kadhemain shrine in Baghdad for the anniversary of the martyrdom of ImamJawad
The blasts came as pilgrims descended on the Kadhimiya shrine in Baghdad to commemorate the martyrdom anniversary of anniversary of the martyrdom of Imam Jawad (Mohammad al Jawad) the ninth Shia Imam.
12