A pregnant woman and three children were among 18 civilians killed when Syrian rebels shelled a Kurdish neighborhood in the northern city of Aleppo, a monitor said Wednesday, according to AFP

The Britain-based Syrian Observatory for Human Rights said 70 people, including 30 children, were also wounded in Tuesday's attack, adding that the shelling was a violation of a ceasefire agreement. 

"A major shelling attack on Tuesday has left 18 civilians dead, including three children and two women, a pregnant one and an elderly one," according to the Observatory.