13 Regime Troops Dead as Rebels Blow Up 2 Tunnels in Aleppo

Rebels detonated two explosives-filled tunnels under a Syrian regime-held building in Aleppo on Tuesday, leaving "13 dead among the guards and regime forces" and wounding an unspecified number of others, the Syrian Observatory for Human Rights said.

The building in Aleppo's mostly regime-controlled old city was a police station occupied by regime forces.

The Islamic Front, one of the largest rebel groupings, said it launched the attack.

A photograph posted by the group on Facebook reportedly of the attack showed a huge cloud of smoke rising into the sky near to the city's historic citadel.

On May 8, rebel forces also used explosive-packed tunnels to blow up the city's Carlton hotel, killing at least 14 government soldiers and pro-regime militiamen.

Syria's war has killed more than 170,000 people and forced nearly half the population to flee.

At least 113 people were killed on Monday, the day of the Eid al-Fitr feast marking the end of the Muslim fasting month of Ramadan, the Observatory said.