That's the warning from watch manager Kevin Aitken, whose crews tackled the latest in a string of blazes at a disused workshop at the Euro Tanks site off Heritage Way in Corby.

The fire service confirmed yesterday that they are now treating Saturday's fire as arson and are linking it to a series of dangerous incidents in the past few months.

Mr Aitken said: "This is an arson hotspot. There is no evidence of any electrical fault. Someone had introduced the fire into the building.

"There will come a time when the person responsible for these will cause themselves serious injury or even death, or to someone else, or to one of my firefighters.

"It appears that there's one person or a small group of people responsible.

"We do as much education as possible but there's some people you just don't reach."

The fire was started on a vehicle inside the building close to the large black engineering shed affected by arsonists on May 22.

On Saturday, flames shot eight metres in the air and bystanders were evacuated from the area following the discovery of potentially explosive oxy-acetylene cylinders.

As with the May 22 incident, Phoenix Parkway was closed off and a 200-metre exclusion zone was put in place.

Owner Bee Bee Developments has secured the site by locking gates to the main entrance and putting up temporary fencing around the perimeter.

But part of the site includes a public right of way that the owners cannot close. It links Heritage Way with the Pen Green Lane area via a footbridge over the railway line.

Corby Old Village company Big About Music (BAM) wants to develop the disused site into a major music venue.

Sean Lafferty from BAM said: "I don't think they are trying to disrupt our plans. I think it's people that have got nothing better to do.

"It is annoying though because we just want to get on with the project."