A man named Samir Zitouni helped many people on a train. He stopped a man with a knife from hurting more people. Samir got hurt and is now in the hospital, but he is still alive.

Samir works for the train company LNER. His boss and his family say he is very brave. Many people thank Samir for helping others. Some people say Samir is a hero.

The police say ten people were hurt on the train. The police are looking at other knife attacks in the same area. The police want to know if the same man did all the attacks.