Mass grave reveals scale of unlawful killings by Egyptian army in Sinai, say campaigners

Human rights group says hundreds of skeletons found exposed or buried just below ground during research into killings of civilians

Hundreds of bodies could have been buried at a mass grave discovered in Egypt's Sinai province by human rights campaigners.

Bodies lying on the surface and others buried barely 30cm below were found at a burial site near a military outpost by the Sinai Foundation for Human Rights.