BEIRUT (AP) — Syrian activists say at least 14 people, including children, have been killed in three explosions in the northern city of Aleppo.

The director of the Britain-based Syrian Observatory for Human Rights, Rami Abdul-Rahman, says the blasts appeared to have been caused by missiles. He says they hit the eastern neighborhoods of Hamra and Tariq al-Bab on Friday.

The Observatory says dozens of people were wounded, and that many more are believed to be trapped under the rubble of damaged buildings. It says the death toll may rise.

Videos posted online showed what appeared to be the aftermath of the explosions. In one, at least nine bodies are laid out on a floor, some of them wrapped in blankets.

The videos appeared authentic and correspond to other AP reporting.

Copyright 2013 The Associated Press.