One engine was called initially, but crews requested an aerial ladder platform, which requires a support vehicle, it added.

BBC: Three crews sent to trapped gull in Norwich

Photos of the three slain students were displayed, onlookers applauded marchers and firefighters hung a large American flag from an aerial ladder.

NPR: Ohio Students Commemorate Classmates Slain By Teen

At the height of the fire, crews from 10 fire engines and an aerial ladder platform tackled the fire, with warnings given about smoke affecting neighbouring properties.

BBC: Scene of fire