Story highlights More than 230 children among deaths since ceasefire's collapse, monitoring group says

More than three-quarters of recorded deaths were in rebel-held areas, group says

(CNN) More than 1,000 people have died in airstrikes and shelling in the Syrian city of Aleppo since a short-lived ceasefire broke down 60 days ago, according to a UK-based monitoring group.

The figure includes deaths in rebel-held eastern Aleppo, in government-controlled western Aleppo and in the surrounding countryside, the Syrian Observatory for Human Rights said Friday.

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The group's tally comes as Russian-backed Syrian government forces once again pummel eastern Aleppo.

The weeklong ceasefire brokered by the United States and Russia collapsed in the early hours of September 19 , according to the observatory.

Of the 1,086 dead the Syrian Observatory for Human Rights has documented across the city since then, 231 were children and 98 were women.

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