Pupils at Ashley Hill School in Onchan in the Isle of Man were evacuated today as a security precaution.
A police operation was immediately put in place around the school.
Some 265 children were evacuated by fire alarm before moving to the recreation ground below Onchan Community Centre, in School Road.
Parents were asked to pick their children up and take them home.
Police stress no one has been injured.
Sergeant Gavin Callow said: ‘Police will release further information in due course but we would ask the public to stay calm and we can again reassure you that the children and staff are safe.’
One parent said: ‘There has been some kind of security threat. I got a call asking me to pick up my daughter.
‘Everyone is fine and they’re having a good time in the sunshine.’
There was heavy traffic around the community centre as worried parents arrived to pick up their children.
Police were directing traffic and were stationed at each of the entrances to the park.
Civil Defence volunteers were at the scene handing out water.
Fire crews were also in attendance.
Ashley Hill School was cordoned off by police.
Yesterday, 26 schools across the UK were forced to close after a series of anonymous bomb threats.