Syrian rebels 'break into Aleppo police academy'
2 March 2013 Last updated at 17:12 GMT
Rebels appear to have broken into a police compound in Aleppo, a YouTube video suggests.
The BBC's Jim Muir, monitoring the conflict from Beirut, says rebels have been aiming at the police academy for some time and appear to be advancing inside.
There are also reports of heavy clashes in northern provincial capital of Raqqa.