A horrifying video of a crowd watching a mob beat two teenage brothers to death has sparked mass demonstrations in Pakistan

The video, broadcast on Pakistani news channels, shows a lynch mob taking turns to savagely beat the two boys with sticks, drawing blood from them before dragging and hanging their dead bodies from a nearby pole. But perhaps just as shocking is that none of the dozens of people and police watching tried to stop the vicious attack. It is now thought the boys, who were on their way to play cricket in Sialkot, an eastern Punjab province, may have been mistaken for robbers by the group who decided to deliver brutal justice for their supposed crime. As details have emerged authorities appear increasingly confident the two boys - Moiz Butt, 17, and his brother Muneeb, 15 - were innocent. At least 10 suspects have been arrested, including four police officers. In 2008, in two separate incidents in less than a week, crowds set fire to suspected robbers in the southern city of Karachi.