A FIRE chief has sounded a warning after arsonists torched a derelict mill last night.

The yobs set fire to the floor in Eden Wood Mill, in Eden Wood Road, Ramsbottom, at 8.40pm, forcing firefighters to head inside the mill.

Crews spent two hours there, before finally extinguishing the blaze, which left the floor with extensive damage.

Rawtenstall fire station crew manager Lee Garnett said: “It put our firefighters at risk and it was a risk to anyone else because the floor was ready to collapse.

“The people who did this may think it is good fun but the building needs knocking down.”