£80,000 reward for German marksman The attacks, targeting mainly car transporters, have occurred on six motorways in southern Germany, and have left one person seriously injured. In most of the incidents the shooter used a .22 rifle and but since June he or she has started using the bigger and more powerful 9mm round. Ballistics experts have found that in some cases the shots have come from an elevated position such as a bridge or verge, and at other times from a moving vehicle. "The culprit is primarily interested in car transporters, and appears to have acknowledged that his actions risk injuring or killing people," said Roger Lewentz, interior minister for the state of Rhineland-Palatinate where many of the shootings have taken place. In 2009 a woman was seriously injured after she was shot in the throat on the A3 motorway near the town of Wurzberg. Some 90 officers have been drafted in to find the shooter, but their investigation has been hampered by the fact that many lorry drivers fail to realise they have come under fire until they stop to unload their cargo. This has made pinpointing the spot where the attack occurred something of a lottery.