Police are urging people to stay away from the derelict St Crispin’s Hospital site after attending six call-outs where people were placing themselves in danger.
Although a planning application was submitted last month to turn the listed building into a retirement village, the former hospital in Duston has stood empty and unused since closing in 1995.
Part of the building was set on fire by arsonists in March and the structure suffered serious damage.
Northamptonshire Police said today that officers had attended the site six times in the last few days, including twice yesterday (Wednesday).
PC Sarah Whitehead, from Duston Safer Community Team, said: “We’ve located several children and young adults on the site, who are getting into and climbing the buildings, which is clearly very dangerous.
“We’ve also received a number of calls from concerned local residents and would like to urge people to stay away from this privately-owned site and make sure their children do the same.”