Coastguards and lifeboat volunteers were called out twice last night after people spotted emergency distress flares.
The first incident happened in Port Erin at around 7.15pm when someone reported seeing a red flare off the Island's west coast.
A search lasting two and a half hours, however, failed to find anything.
At 8.30pm, Douglas Coastguards received a similar call about a white flare in Douglas Bay but a search failed to turn up anyone in distress.
Crash closes section of the Mountain Road
Beach hut owner praises youngsters for owning up to break-in
Questions raised over Cair Vie Windfarm funding
Crogga still owes the Isle of Man Government money
DoI says works at Liverpool ferry terminal will take longer
Over 50 employment tribunals outstanding at the DoI
Free period products bill raises cost concerns for MHKs
Key road in Ramsey to re-open early this afternoon