Ramadi, an important gain that could signal ISIS' imminent exit from the key city in Iraq.
"Following days of fighting as ISIS militants fought to defend the compound, the resistance ended, and Iraqi forces found that the ISIS fighters had withdrawn," Col. Mohammed Ibrahim, a spokesman for Iraq's Joint Operations Command was quoted as saying by CNN.
"The government compound is under our full control," Ibrahim said. "This does not mean we have entered the compound. It means it is fully surrounded and fully under our control."
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Iraqi security forces are advancing slowly, as ISIS left improvised explosive devices on the streets and in buildings.
Fierce gun-battle were erupted in Ramadi, Iraq's Sunni heartland, after ISIS militants have started gaining ground in the area last year that forced many to leave the area.