Ariana Grande had an encounter with three demons.

The 20-year-old star believed she was confronted by supernatural beings when she visited two haunted spots in Kansas City, US.

She told Complex magazine: ''We went to this haunted castle and were so excited. The next night we wanted to go to Stull Cemetery, which is known as one of the seven gates to hell on Earth. The Pope won't fly over it.

''I felt this sick, overwhelming feeling of negativity over the whole car and we smelled sulphur, which is the sign of a demon ... I was like, 'This is scary, let's leave.'

''I rolled down the window before we left and said, 'We apologise. We didn't mean to disrupt your peace.' Then I took a picture and there are three super distinct faces in the picture - they're the faces of textbook demons.''

The 'Put Your Hearts Up' star - who is in a relationship with The Wanted's Nathan Sykes - posted an image of her supernatural encounter on Instagram but later took it down because strange things started happening to her.

Ariana says she began hearing a ''really loud rumble'' and ''whispers'' while seeing ''really disturbing images with red shapes'' when she shut her eyes.

The brunette beauty also pictured ''massive black matter'' on the left side of her bed when she woke up.

Ariana insists she didn't let these happenings scare her, simply because demons ''feed on fear''.