U.N. human rights chief urges probe into alleged deliberate sinking of a packed migrant boat . If true , he says , ` ` We are looking at what amounts to mass murder in the Mediterranean '' He tells of people ' laughing as they rammed the boat , watched it sink . Five days later , the smugglers allegedly rammed their boat far out to sea between Malta and Greece , causing it to sink , after the migrants refused to move onto a smaller boat they judged to be unseaworthy . Children are among as many as 500 people feared dead ; 11 survivors have been found .
U.N. human rights chief urges probe into alleged deliberate sinking of a packed migrant boat . If true , he says , ` ` We are looking at what amounts to mass murder in the Mediterranean '' He tells of people ' laughing as they rammed the boat , watched it sink . Children are among as many as 500 people feared dead ; 11 survivors have been found .