The Britain-based Syrian Observatory for Human Rights said Tuesday that the dead in the last two days of clashes included at least 26 rebel fighters, 40 soldiers and five pro-government militiamen.
The activist group says the two sides have been shelling each other while the government has launched airstrikes.
The police academy lies on the eastern side of Aleppo, Syria's largest city, which rebels have been battling to control since last July.
The U.N. say some 70,000 have been killed since Syria's conflict began in March 2011
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