(CNN) — The key Iraqi city of Ramadi fell to ISIS on Sunday after government security forces pulled out of a military base on the west side of the city, the mayor and a high-ranking security official said.
The ISIS advances came after militants detonated a series of morning car bomb blasts, Mayor Dalaf al-Kubaisy and a high-ranking Iraqi security official said. The explosions forced Iraqi security forces and tribal fighters to retreat to the city’s east, they said.
Clashes have raged in the beleaguered capital of Anbar province for months as Iraqi and allied forces battle ISIS militants for control of the strategically located city, which is just 110 km (70 miles) west of Baghdad.
Ramadi, the largest city in western Iraq, is just a few miles from an Iraqi army headquarters that ISIS blew up in March.
ISIS took over parts of the city in the first half of last year, placing it at the heart of a deadly tug of war ever since.
And officials said Sunday that the fight for the city is far from over.
Even as ISIS took control, pockets of resistance remain inside the city, said Muhannad Haimour, a spokesman for the Anbar governor.
While ISIS declared victory and claimed full control of the city, the Iraqi Federal Police vowed to stamp out ISIS in the region. In a statement, police said Lt. Gen. Raid Shakir Joudat was on the way “commanding a huge force consisting of various weapons to cleanse Anbar province from terrorist gangs.”
State TV: Iraqi forces on the way
Iraq’s Prime Minister, Haider al-Abadi, is also preparing to send in reinforcements, according to a statement read on Iraq’s state-run Iraqiya TV Sunday.
He’s ordered the al-Hashd al-Shaabi paramilitary force to prepare for deployment against ISIS militants in Anbar province. It will be joined by Iraqi security forces and Sunni tribal volunteers. The decision to mobilize the paramiltary force, which is Iranian-backed and predominantly Shiite, follows a request for help from the Anbar provincial governor, provincial council, tribal leaders and religious clerics.
On Thursday, ISIS pushed into Ramadi, using armored bulldozers and at least 10 suicide bombings to burst through gates and blast through walls, according to a security source who has since left the city.
Dozens of militants followed them into the city center and ISIS raised its trademark black flag over the provincial government building.
On Friday, the United States announced that it was “expediting” weapon shipments to Iraq because of the current fighting in Ramadi.
What are the implications of an ISIS takeover?
Whether or not Ramadi will stay in the hands of ISIS remains to be seen, analysts said Sunday.
Some U.S. officials have tried recently to downplay the significance of Ramadi, saying they are not focused on the city.
But retired Lt. Col. Anthony Shaffer, a senior fellow at the London Center for Policy Research, said the situation in Ramadi is a significant sign that forces fighting ISIS need to take a different tack.
“Ramadi’s a bad news story, period,” he said. “It’s not going well. The military units we’ve trained in the Iraqi army are basically laying down their guns and running.”
But the significance of the city falling may have less to do with the militant group, and more to do with the strength of Iraqi forces, CNN counterterrorism analyst Philip Mudd said.
“This is not about ISIS. This is about whether the Iraqi military has the capability, and more importantly, the will to face up with ISIS,” he said. “They’ve had some successes, the military has. This is a setback. It’s going to take years to figure out who will prevail.”
CNN’s Jomana Karadsheh, Jim Sciutto, Fredricka Whitfield, Barbara Starr, Ralph Ellis, Pat St. Claire and Jason Hanna contributed to this report.