(Cover) - EN Showbiz - Lady Gaga was reportedly freaked out after a stalker got backstage at a recent concert.

The 24-year-old musician has an army of dedicated followers across the globe, although one fans adoration became too extreme when they reportedly managed to sneak past security at a show at The O2 arena in London, England.

The concert took place last Thursday, with the obsessed female fan allegedly finding her way into the backstage holding area.

Lady Gaga was freaked out after a stalker got within yards of her in a massive backstage security breach at The O2 arena, reported British newspaper The Daily Mirror.

The stars security team had to call the police after the stalker reportedly made her way towards Lady Gagas dressing room. According to the newspaper, the fan had forged backstage passes and laminates which enabled her to get through security checks.

It is believed Lady Gagas management team are aware of the woman and the singer was told about the situation. After being quizzed by police, the intruder was let go.

According to an insider at the venue, Lady Gaga remained professional and didnt let the incident affect her performance.

Gaga was understandably shaken by the incident but was a consummate professional and continued as per normal, putting on a dazzling show, said the source.

The singers spokesperson has declined to comment on the event. (C) Cover Media