Syrian helicopters drop "barrel bombs" on rebel town, killing 20

BEIRUT (Reuters) - Syrian army helicopters bombarded the northern rebel-held town of Al-Bab for a second day on Sunday, killing 20 people including four women when they dropped improvised barrel bombs on a market district, a monitoring group said.

The Syrian Observatory for Human Rights said the death toll could rise because many people were severely wounded in the raid, which came a day after 26 people were killed in a similar attack on the same town by President Bashar al-Assad's forces.