London, England (CNN) -- No charges will be filed against a police officer who struck a man who later died during the G-20 protests in London last year, the director of public prosecutions said Thursday.
Ian Tomlinson died April 1, 2009, in London's financial district as demonstrations took place against the G-20 summit being held in the city. He was returning home from his job selling newspapers and had not been taking part in the protests.
Videos shot by witnesses showed a police officer apparently pushing Tomlinson to the ground. Prosecutors said he was also struck by a baton.
An initial autopsy ruled Tomlinson died of a heart attack, but a second one found he died from abdominal hemorrhage.
The Independent Police Complaints Commission investigated Tomlinson's death and passed the findings to the Crown Prosecution Service to decide whether any charges should be filed against the officer.
CNN