Lady Gaga has spent £3,000 on ­ghostbusting gear ­because she's convinced evil ­spirits are haunting her.

The pop diva got aides to buy the specialist kit, including ­electro-­magnetic field readers, ­before her Monster's Ball tour gig at ­London's O2 arena tonight.

She told them she was ­terrified of 'bad energy' - and ordered them to do a spirit-seeking sweep of the ­backstage area. Her ­request came to light after an aide phoned Dan Webb's ghost-busting firm.