12:55 p.m.

Syrian state TV says government forces have entered the historic town of Palmyra, which has been held by the Islamic State group since last May.

The TV is quoting its reporter embedded with the troops as saying that around midday on Thursday, the fighting was concentrated near the archaeological site on the southwestern edge of the town.

The TV aired footage showing soldiers walking and SUVs driving near a building that appears to have been a hotel.

A Syrian soldier told the TV station that he has a message for the IS: "You will be crushed under the feet of the Syrian Arab Army."

Syrian troops have been on the offensive for days in an attempt to capture the town that is home to one of the world's most famous archaeological sites.

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11:35 a.m.

A Syrian official and a an opposition monitoring group say Syrian government forces are 1 kilometer (half mile) away from the heart of Palmyra, an ancient town controlled by the Islamic State group.

Homs governor Talal Barazi tells The Associated Press that the army has determined three directions to storm the town and is now clearing all roads leading to Palmyra from mines and explosives.

Barazi said Thursday he's predicting an "overwhelming victory in Palmyra" within the next 48 hours.

The Britain-based Syrian Observatory for Human Rights says the troops are facing tough resistance from IS extremists as they try to penetrate the town's eastern and southern limits.

The Islamic State group has controlled Palmyra since May and has destroyed many of its famed archaeological sites.

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9 a.m.

An Iraqi military spokesman says the long-awaited military operation to recapture the northern city of Mosul from Islamic State militants "has begun."

The spokesman for the Joint Military Command, Brig. Gen. Yahya Rasool, says Iraqi forces retook several villages on the outskirts of the town of Makhmour, east of Mosul, on Thursday morning.

Rasool says the U.S.-led international coalition is providing air support. He wouldn't divulge more details.

It was not immediately clear how long such a complex and taxing operation could take. Mosul lies 360 kilometers, or 225 miles, northwest of Baghdad.

It's Iraq's second-largest city and it fell to Islamic State group during the militants' June 2014 onslaught. Mosul is also the largest city in the Islamic State group's self-declared caliphate.