Explosion hits Iraq base housing pro-Iranian militia
Meanwhile the militia, the Popular Mobilisation Forces, blamed an attack.
It comes amid heightened tensions between Israel and Iran.
The long-running confrontation between the rival countries has moved into a new phase, with a presumed Israeli attack carried out near the Iranian city of Isfahan early on Friday morning.
The attack was an apparent response to a major drone and missile attack that Tehran launched on Israel six days earlier.
The Iranian action was in retaliation for an earlier strike on senior Iranian military commanders in the Syrian capital Damascus – widely believed to have been carried out by Israel.
While the conflict still seems contained to some extent for now, the Iranian foreign minister has warned that Iran will deliver a “maximum” response if Israel launches significant attacks on its interests.
The explosion at Kalso military base, about 50 km (30 miles) south of Baghdad, happened early on Saturday morning, the military said.