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Operation to clear ISIS from the coastal city began three months ago

Official: About 150 to 200 terrorists still in two districts in Sirte

(CNN) —  

ISIS is on the brink of being kicked out of the coastal Libyan city of Sirte – the extremist group’s most significant stronghold outside Syria and Iraq.

Forces loyal to the the U.N.-backed Government of National Accord (GNA) in Tripoli, already in control of most of the city, liberated one of only three remaining districts under ISIS control on Tuesday, a security official told CNN Wednesday.

Col. Ismail Shukri, head of Intelligence for the Tripoli government in Misrata – 167 miles (270km) to the north-west of Sirte – told CNN their forces had captured a neighborhood from ISIS in Sirte designated “District 2,” leaving only “Districts 1 and 3” under ISIS control.

READ: Libya’s chaos, explained in five graphics

Government of National Accord forces advance into an ISIS-held district of Sirte on August 14.
Government of National Accord forces advance into an ISIS-held district of Sirte on August 14.
PHOTO: MAHMUD TURKIA/AFP/AFP/Getty Images

“Now there is ongoing fighting in one part of District 1. Districts 1 and 3 are both residential areas adjacent to each other and we will soon advance on them,” he said.

“There are about 150 to 200 terrorists still in these districts,” he added. “There is no room for them to escape. They will fight until the last bullet. They had an opportunity to escape earlier but now they are surrounded.”

He added that the operation has air support from the US-led coalition.

Fierce resistance

Libyan forces started the campaign to liberate the Mediterranean city – best known as Moammar Gadhafi’s hometown before it fell into the hands of ISIS – three months ago.

READ: Seven reasons you should care about Libya 

Government of National Accord forces have been fighting in Sirte for three months.
Government of National Accord forces have been fighting in Sirte for three months.
PHOTO: MAHMUD TURKIA/AFP/AFP/Getty Images

The operation has not been easy, however, with Libyan forces encountering fierce resistance, including numerous suicide car bombs. 

The extremist group gained a foothold in the country in a power vacuum that hasn’t been filled since collapse of Gadhafi’s regime collapsed in 2011.

Following the Arab Spring, there were hopes that Libya would follow a more democratic path like its neighbor, Tunisia. But warring factions soon split over how to run the country, and civil war ensued.

Two rival sides claimed to be the rightful leaders before signing a U.N.-backed peace deal in December.

US officials estimate there are 4,000 to 6,000 ISIS militants in the country.