A police constable is under criminal investigation after a video emerged showing an officer kick and stamp on the head of a man as he lay on the floor at Manchester Airport.The Independent Office for Police Conduct (IOPC) said on Friday the Greater Manchester Police officer had been advised he was under criminal investigation for assault.

A police constable is under criminal investigation after a video emerged showing an officer kick and stamp on the head of a man as he lay on the floor at Manchester Airport.The Independent Office for Police Conduct (IOPC) said on Friday the Greater Manchester Police officer had been advised he was under criminal investigation for assault.