Tulisa Contostavlos left 'utterly petrified' after 'stalker' hammers on the door of £5m home

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Former X Factor Judge Tulisa Contostavlos was left 'utterly petrified' after an alleged stalker reportedly hammered on the door her £5 million Hertfordshire home late last night.

The stalker is said to have banged on the N Dubz singers’ door after sneaking past security measures at her home, according to The Mirror.

Hertfordshire police confirmed last night they have arrested a 24-year-old man from Stamford Hill, North London.

A police spokesman said: “The man was served a first warning for harassment. He was released with no further action and all parties involved are satisfied with this.”

The incident comes a week after Contostavlos was arrested on suspicion of supplying class A drugs. The singer allegedly arranged for an undercover Sun reporter to buy cocaine from Mike GLC, her friend and part-time rapper.

A source close to the N Dubz star told The Mirror: “She has had an absolutely hellish past few days- and now this. She is at an all-time low. Tulisa is a girl whose professional life is in tatters.

“This guy started hounding her daily since the drug fixing story broke. He started knocking down her front door in the middle of the night and Tulisa was utterly petrified. This is the last thing she needs to be dealing with right now.”

Contostavlos has been released on bail following her arrest last week.