[Refugees and migrants line up for food distribution at the Moria migrant camp on the island of Lesbos]A migrant was found dead on Monday in his tent on Greece's Lesbos island, the third death there in a week, raising alarm about conditions in Greek camps. The man is believed to be about 20 and from Pakistan, a police official on the island said. Authorities are investigating the cause of the deaths and have ruled out foul play, the police official said, speaking on condition of anonymity.