Hamburg shooting: Screams heard as unknown gunman 'opens fire on police from high rise'
![Hamburg shooting: Screams heard as unknown gunman 'opens fire on police from high rise'](https://i2-prod.mirror.co.uk/incoming/article29464009.ece/ALTERNATES/s615/1_Rear-View-Of-Police-Walking-On-Land.jpg)
Heavily armed police are at the scene of a shooting in Hamburg, Germany, where a gunman has opened fire on officers below from the sixth floor of a building in the Altona district