Four people have been injured with a hatchet on a French local train, police said on Monday. A police spokeswoman said the attack in the Paris area was an act of revenge. Two people were seriously injured and two others slightly. The exact circumstances of the attack were still unclear. Railway operator SNCF posted on X in the morning that there had been an incident on a train in Ozoir-la-Ferrière and that the police and fire brigade were on the scene. There were no further details of the incident, but the post said that some train services had been cancelled. French media reported that an arg…