A Palestinian television channel has broadcast footage purporting to show Israeli border guards beating the teenage cousin of Mohamed Abu Khdeir, who was abducted and killed earlier in the week. The footage is said to show Tariq Abu Khdeir, 15, being beaten after he was detained during clashes in Jerusalem on Thursday. Israeli police say the incident occurred during the arrest of several demonstrators, some carrying knives. The boy's family deny he was involved in the clashes