Egyptian official's claim contradicts Greek defense minister's account.
Move comes after the U.S. urged Russia to pressure Syrian regime.
The city has been an Islamic State stronghold for more than two years.
IS suspected to have conducted serial blasts in gov't strongholds.
An EgyptAir plane with 66 passengers and crew on board went missing on Thursday on its way to Cairo from Paris. The plane's wreckage was found near the Greek island of Karpathos.
by Michael Lerner Russia presses Israel to not sell gas to Turkey.
Foreign ministers in Vienna decide to airdrop relief supplies in Syria.
Human rights body reveals "chilling campaign to quash dissent."
Female suicide bomber strikes in the northen district of al-Shaab.
50,000 civilians trapped in city, where Iraqi forces are shelling militants.
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