Emergency services have been called to an incident in Port Erin.
Coastguard teams and a helicopter, police and ambulance crews have been called to Bradda Head as well as fire crews and Peel and Port St Mary lifeboats.
One bystander took a photo of smoke rising from the headland, while another posted video footage of the smoke to social media.
A number of people say they saw a small aircraft come down nearby.
Police are asking people to avoid the area, but no further details have yet been released.
                                        
            Jiu-Jitsu champion makes Manx sporting history 
        
            MHK asks how much NI cuts would cost government
        
            Seven ferry sailings rescheduled because of tides
        
            Vicar blushes (and laughs) over accidental nude beach visit
        
            Amber weather warning issued for tonight
        
            Gas leak work shuts Ramsey street
        
            Historic Douglas pub closes for 'little refresh'
        
            Commissioners issue fireworks plea after noise stresses dog