Human Rights Watch said it was investigating the same rebel group that claims it has captured UN peacekeepers for executing captured Syrian soldiers earlier this week.
Peter Bouckaert of the human rights monitoring group said it was investigating the involvement of the "Martyrs of Yarmouk" brigade in a video showing the execution of detained Syrian soldiers posted on the Internet yesterday.
More top news
John Hesp, 64, took the poker world by storm by making it into the last seven of the competition.
Many parts of the UK seeing rain to start the weekend.
Can you guess what film the cow was trying to watch?