(CNN) US-backed forces fighting ISIS in Raqqa say "major military operations" in the city have ended and that the jihadists have lost control of their self-declared capital.

The development marks a decisive victory in the fight against ISIS, though US officials said there were still pockets of resistance in the city.

"Major military operations in Raqqa are finished but they are now clearing the city of sleeper cells -- if they exist -- and mines," Talal Salo, spokesman for the US-backed Syrian Democratic Forces, told CNN. The SDF is a coalition of Arab and Kurdish fighters.

"The situation in Raqqa is under control and soon there will be an official statement declaring the liberation of the city."

A member of the Syrian Democratic Forces (SDF), backed by US special forces, holds their flag at the Al-Naim square in Raqqa on October 17, 2017.

Symbol of ISIS decline

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