The office of the Police Ombudsman in Northern Ireland is to investigate the death of Peter Somerville (21) from Maghera, Co Derry.
He suffered critical head injuries when he fell from a moving PSNI van in Maghera last Friday. Mr Somerville was in police custody at the time.
The ombudsman’s office in a statement yesterday confirmed that Mr Somerville died from his injuries and asked for any witnesses to come forward to assist with its investigation of the death.