Building with black flag of ISIS on top of it targeted by U.S. airstrikes in key Syrian town of Kobane as Kurds vow to fight jihadists to the death

• Airstrikes are taking place in besieged Syrian city of Kobane this morning

• U.S. led anti-ISIS coalition carried out strikes, which targeted the militants

• Strikes come one day after terrorists raised flag over a building in suburbs

• Four-storey structure said to have been targeted by this morning's strikes 

Airstrikes are taking place in the besieged Syrian city of Kobane this morning, targeting Islamic State militants who have advanced into the suburbs.

The U.S.-led anti-ISIS coalition is believed to have carried out the airstrikes, which come just a day after the terrorists raised their black flag over a building in the east of the city - located right on northern Syria's border with Turkey.

Smoke was seen coming from positions immediately behind the four-storey building this morning, with reporters stationed across the border in Turkey saying heavily armed police there had ordered people to stay indoors while the strikes take place.

Kurdish fighters defending Kobane have vowed to fight ISIS to the death, saying they will do their utmost to prevent the Islamist 'monsters' massacring civilians.