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Staying in Iraq, a suicide bomb blast has killed four people and injured 23 others in Ramadi,the capital of the western Anbar Province.
A female attacker, detonated explosives strapped to her body at the provincial government headquarters.
In a separate incident, police shot-dead a would-be suicide bomber near the provincial government's headquarters in Mosul.
The attacks coincide with US Vice President Joe Biden's meeting with Iraqi officials in Baghdad.
Attacks on government offices are commonly linked to al-Qaida in Iraq, but the group has yet to claim responsibility.