Greater Manchester Police does not investigate 60% of crimes 4 September 2013 Last updated at 20:57 More than half of all crimes reported to Greater Manchester Police are not investigated, the chief constable has admitted. Sir Peter Fahy said officers are only able to concentrate on about 40% of reported crime. Britain's second largest force has faced cuts of £145.5m in the four years to 2015, with officer numbers reducing by 19%. However, recent figures show most recorded crime has fallen by 19%. Intelligent policing Sir Peter said: "In the same way that the health service concentrates on the most serious illnesses and the treatments likely to have most effect, the police have to concentrate on the most serious crimes and those where there are lines of investigation likely to produce evidence of the offender. In practice, this translates into about 40% of crime being actively pursued at any time. We look at all crimes to identify patterns of offending and to build the picture of where we need to target police patrols. In many crimes there are no witnesses, no CCTV and no forensic opportunities. Tony Lloyd, the force's Police and Crime Commissioner, said: "Let me be clear that I expect, and the chief constable expects, that with all serious crime no effort will be spared to bring the criminals to justice. What I don't expect is where there are no witnesses or no evidential trail that the police go through a paper chase to simply tick boxes, but instead use intelligent policing to prevent a recurrence of those types of crime.