An investigation into the death of Mark Duggan, whose fatal shooting by police triggered riots across the country, has still to establish the sequence of events concerning a handgun found at the scene, the police watchdog said. The Independent Police Complaints Commission (IPCC) said that was a key element in its probe. But it said that the sequence of events was not yet known, despite a report in Saturday's Guardian that the investigation had found no forensic evidence that he was carrying a non-police-issue gun. The newspaper, in a story headlined "Revealed: man whose shooting triggered riots was not armed", said a gun collected by Mr Duggan earlier in the day was recovered 10ft-14ft (3m-4.25m) away, on the other side of a low fence from his body, and that he was killed outside the vehicle he was travelling in, after a police marksman fired twice. On the day Mr Duggan was shot, there is overwhelming evidence that he had obtained a firearm, but the investigation is considering whether he had the weapon in his possession when he was shot, the Guardian said. The IPCC said in a statement on Saturday night that the investigation was examining a range of issues. "This is a complex investigation that involves gathering information including witness statements, pathology, forensics and ballistics analysis and we have stated to the coroner that it will be completed within four to six months," the statement said. "One of the key elements we will seek to establish is the sequence of events concerning the non-police issue firearm found at the scene. That has not been established yet, contrary to what has been written in the Guardian article today. "We would urge people not to rush to judgment until our investigation is complete and they have the opportunity to see and hear the full evidence themselves." The statement said the IPCC believes the headline on the Guardian's article was "misleading, speculative and wholly irresponsible".