UK, London: About 4000 people in Syria has killed by Islamic State (IS) militant group including 2,114 civilians in the past 19 months. A monitor said on Friday, the nearly 4,000 executed people included 78 children and 116 women.

Execution methods included beheading, stoning, firing squad, immolation and hurling victims off buildings, said the UK-based Syrian Observatory for Human Rights. IS also executed 422 of its own members since it declared an Islamic Caliphate across swathes of Syria in June, 2014, the watchdog said. The Observatory relies on a network of activists and doctors inside Syria for its information.