Lady Gaga fired her entire security team after an incident at a gig in Japan, according to reports.

The singer is understood to have been left upset after a fan was able to get on stage during the concert.

"She went potty. She couldn't believe they could let these things happen so she fired them on the spot,” a source told The Sun.

“She goes out of her way to make her shows perfect and expects the same from her people. Some thought she would calm down but she put them straight on a plane home."

Lady Gaga is due to return to Britain later this month to embark on the second UK leg of her Monster Ball world tour.

(by Jason Gregory)