In one of Europe's worst rail disasters, 25 people have been killed in a head-on collision between two passenger trains during morning peak hour near Brussels in Belgium. Railway officials said the trains collided during the morning rush hour at Halle, southwest of Brussels. The provincial governor said at least 10 people havebeen killed, but other officials put the death toll at 25.Belgian National Railways told the VRT radio network that 25 people have been killed. The governor of Flemish Brabant province, Lodewijk De Witte said one of the trains seemed to have missed a stop signal.The collision was so powerful that it smashed one train deep into the front of the other. The trains tipped high in to the air and broke overhead power lines.Rail services to south-western Belgium and beyond to Paris and London have been cancelled.