Syria's state TV said two explosions occurred on Friday morning in the northern city of Aleppo, leaving many civilians and law-enforcement members killed.

One "terrorist" explosion targeted the military security compound in New Aleppo neighborhood and the other targeted a law- enforcement forces' barrack in Hanano area.

There has been no immediate account of casualties.

The explosions are the first two to have occurred in Aleppo, the second largest city and the economic power house of Syria.

Aleppo has remained mostly calm during the past 11-month-old turmoil in other parts of the country. The Syrian government accuses armed groups of trying to prompt Aleppo to take part in the anti-government movement.