POLICE have stepped up patrols at a derelict factory following two possible arson attacks this month.

Herts police officers are carrying out regular patrols at the former Geo W King building in Blackhorse Road, Letchworth GC, after firefighters were called twice in the last month to tackle fires.

The first fire broke out in a rubbish bin on February 6 and the second was last Thursday.

Police were called to the scene both times to secure the building.

The two separate incidents are thought to have been started deliberately.

In September last year, the Comet reported on a gang of men who pleaded guilty to stealing metal from the premises.

And there have also been reports of anti-social behaviour at the building.

A police spokesman said: “Police and Hertfordshire Fire and Rescue are aware of a derelict building on Blackhorse Road in Letchworth being used for anti-social activity.

“We are working with the landowners to try and find a long term solution to this problem until the future of the site is decided. We will be frequently patrolling the area and would like to stress that it is extremely dangerous for people to venture on to this site and anyone found trespassing will be dealt with.”