Firefighters have slammed arsonists targeting a disused factory in Bradford - claiming they are wasting crews' time and risking lives.
The fire was the latest in a number of arson attacks on the factory, said a spokesman from the fire station, who slammed the people responsible.
"They are wasting our time," he said. "Resources are being used for that instead of being used for other things.
"We are going there quite regularly - there have been two in the last three days alone.
"It is the same factory. Most of the time it has been outside, but this time it was inside.
"It is dangerous as there is very limited access. They broke a window to get in. They might not be able to get out."
He asked those responsible to stop, and warned that police were investigating.