Several people were injured in an altercation in the southern German city of Ulm on Monday. A police spokesperson said three or four people had been injured, but it had yet to be confirmed how severely. A knife or similar weapon had been used in the altercation, the spokesperson said. Local news outlet Süddwest Presse reported that a man had allegedly attacked several people with a machete. The police spokesperson did not confirm this. “We think that those involved fled in a car,” the spokesperson said. A helicopter is being used as part of the operation to search for the suspects. It was init…