Suspect is in custody after ambush during Friday evening rush hour
                                
                                
                                    (Newser) -
                                    Eighteen people were injured in a knife attack at the main railway station in Hamburg, Germany, on Friday evening, according to police. The suspect, a 39-year-old German woman, was arrested at the scene and remains in custody, per the  BBC . The attack occurred during rush hour, around 6pm local...