Angry neighbours are calling for action after travellers set up camp on a former Burnley school site.
The group are believed to have broken through metal gates at the old Ivy Bank school yesterday afternoon.
Around 10 caravans and other vehicles were spotted entering the Lancashire County Council-owned land off Byron Street.
But neighbours and councillors have raised concerns about site security after the travellers gained access to the disused school site.
Laura Barrett, who lives nearby, said: “My husband was at home at the time and heard a commotion and when he went to have a look they had smashed through the school gates.
“It was only a matter of time before this happened as the council has got rid of the 24-hour security guards.
“Now a security guard just seems to turn up every couple of hours for a few minutes in a car and leaves.”
Coun. Neil Mottershead said: “There used to be someone in the office permanently 24-hours.
“But they have changed it to save money I think.
“Residents are upset and concerned but we will do our best to get rid of them as soon as possible.”
Phil Jeffrey, estate surveyor for Lancashire County Council, said: “We are aware of this issue and are working with the police to resolve it. We have already served notice demanding that they leave the site by 4pm today.
“The gates are usually padlocked and there are security arrangements in place for the site, including regular patrols. We are looking into what happened and how this group got onto the site.”