Several Schalke fans were injured when 2,000 supporters ran on the pitch to celebrate their promotion to the Bundesliga. Some people had to be taken to hospital because of injuries and falls following Saturday’s 3-2 home win over St Pauli Hamburg which clinched an immediate return to the German top flight. Schalke had been 2-0 down. Gelsenkirchen police also said in a statement on Sunday there were 144 incidents of ignited pyrotechnics before and during the game. A police officer was meanwhile injured in a scuffle with a Schalke fan and 20 criminal charges were filed for assault, insult and th…