Frankfurt/Main (dpa/lhe) - A man was attacked with a knife in his parked van in Frankfurt and seriously injured his stomach. The 47-year-old was taken to a hospital, police said on Monday. The alleged perpetrator fled the city center after the attack, but then turned himself in to the police. According to a police spokesman, the 46-year-old is to be brought before a magistrate. According to the previous investigation, the two men had been fighting for a long time. On Sunday evening, the subsequent victim is said to have been sitting in his vehicle with the door open when the 46-year-old appeared and attacked him.