Updated

An international rights organization says the Syrian government is indiscriminately targeting civilians and civilian infrastructure with crude bombs in rebel-held districts of the northern city of Aleppo.

Human Rights Watch says its activists have documented 85 locations in Aleppo's opposition-held districts that government aircraft shelled with barrel bombs — makeshift, shrapnel-packed explosive devices rolled out of helicopters.

The New York-based group says in a report Tuesday that the attacks occurred between Feb. 22 and April 2.

The U.N. Security Council is meeting on Wednesday to review whether Syria's warring sides are complying with a resolution demanding the cessation of the use of barrel bomb and other weapons in populated areas.

HRW activists identified the locations after interviewing witnesses and analyzing satellite imagery and video and photographic evidence.