According to GMP's press release,the incident happened around 6.20pm yesterday when an officer in a marked police van was responding to an incident in Little Hulton and was driving along Chorley Road.
The statement continues
Officers from the Forensic Collision Reconstruction Unit are examining the scene and GMP's Professional Standards Branch are aware and have informed the IPCC. In line with procedure, the officer has been suspended from driving duties while inquiries are conducted.
Assistant Chief Constable Ian Wiggett said: "Our thoughts are with the family of this little boy and we are devastated that while responding to try and help one person, another has been injured.
"We are carrying out a full investigation into the circumstances of the collision so we can establish exactly what happened."
Anyone with information about the collision is asked to call the Road Police Unit at Leigh On 0161 856 7201.