Rebel rocket fire on a government-held area of Syria's second city Aleppo killed five children, four of them brothers, an activist group said Sunday. The Saturday evening rocket struck the Shahba al-Jadida district in the west of the city, where loyalist forces have held out since rebels seized the east in 2012, according to the Syrian Observatory for Human Rights. Civilian casualties have been high in Aleppo, where both sides are accused of indiscriminate bombing.