<sod >Anti-government protesters mourn the death of Berkin Elvan, which the prosecutor was investigating He is investigating the death of 15-year-old Berkin Elvan, who was hit by a police gas canister fired during nationwide anti-government protests in 2013.< eod>< sod > Mr Kiraz is investigating the death of 15-year-old Berkin Elvan, who was hit by a police gas canister fired during nationwide anti-government protests in 2013.< eod>