Gunman walked 'calmly' back to car after opening fire at water park injuring nine
![Gunman walked 'calmly' back to car after opening fire at water park injuring nine](https://i2-prod.mirror.co.uk/incoming/article33040552.ece/ALTERNATES/s615/0_WATERPARK6.jpg)
A mass shooting has taken place at the Brooklands Splashpad in Spencer Park in Rochester Hills, Michigan, with at least nine people shot as the youngest victim is just 8 years old