A two-year-old boy and a man aged 41 have been killed in a stabbing in a German park.Police confirmed that a 28-year-old man from Afghanistan was arrested following the attack in Bavarian city of Aschaffenburg. German reports suggested he had a history of mental health issues.Two others were taken to hospital with serious injuries and the public park was cordoned off by officers.Markus Söder, the Bavarian state premier, called the attack a “cowardly and despicable act”. It is the latest fatal knife attack in Germany in recent months, and comes weeks before a federal election on 23 February.Police said their investigation into the stabbing was ongoing, but that the attack had taken place at about 11:45 (10:45 GMT) at Schöntal Park in Aschaffenburg, about 22 miles (36 kilometres) south-east of Frankfurt.The attack involved a kindergarten group according to the Spiegel website, which said other children were among those hurt.Söder described the man killed as “a helper who paid for his civil courage with his own life”.The suspect was arrested close to the scene after officers were called at around 11:45 local time (10:45 GMT). Officers said a second person was initially detained at the scene but was now being treated as a witness.Police said there was no danger to the public.Markus Söder said it was a terrible day and called for a pause: “We mourn the loss of a small, innocent child.”Police said they were investigating a motive and the background to the attack remained unclear. The suspect was said to have been staying in accommodation for asylum seekers.Chancellor Olaf Scholz, who was on a visit to France, condemned an “unbelievable act of terror”. …