The Isle of Man Fire and Rescue Service says an emergency at a fuel facility at Douglas Harbour turned out to be a false alarm.
Shortly before 1pm, five units from Douglas station rushed to the Manx Petroleums facility on Battery Pier.
However, when crews arrived they found a faulty detector had been responsible for the call.
A spokesman for the fire service says although it was a false alarm, it was a good test of the emergency procedures put in place.
Plans to use Summerland site as temporary car park
'Insufficient parking' for businesses in area says DoI
Union says it's been 'stonewalled' by DOI over bus driver strikes
Unite 'not involved' in meetings between MIRS and bus vannin
Sunlight reflecting from mirror sparks carpet fire
Fire crews called out to multiple incidents
Douglas Council must provide new response to FOI about former nurses home
Information Commissioner says authority applied a 'blanket exemption'
Athol Street closed following single vehicle collision
Police and ambulance attend scene in central Douglas