AN 18-year-old Clitheroe woman who threatened a police officer with a kitchen knife began to slash her own wrists with the weapon.

Blackburn magistrates heard Amanda Jayne Simpson was behaving in a "deranged " way during the late night incident in November.

The court was told that Simpson and a 16-year-old girl attacked the front door of a house with knives, shouting abuse and challenges at the occupants.

And defence solicitor Stephen Parker told the court the drink-fuelled behaviour had its origins in an attack on Simpson two years earlier which had "changed the defendant's character and personality".

Simpson, 18, of Hayhurst Street, Clitheroe, pleaded guilty to affray. She was made subject to a community rehabilitation order for two years and ordered to pay £65 costs.

Eddie Harrison, prosecuting, said police driving along Shaw Bridge Street at 12.50am saw Simpson and the girl and stopped to ask what they were doing.

Simpson became abusive and said she was going to kill someone and if the officers got in her way she would kill them.

She told the girl to "get the knives out" and the officers then saw that Simpson had a large kitchen knife in her hand and the other girl had a smaller knife.

"Both girls were walking down the centre of the road, pointing the knives at the police officers," said Mr Harrison.

"The officer says Simpson appeared to be deranged and they kept a watching brief after calling for the dog unit and operational support unit to provide back up."

Stephen Parker said the man convicted of attacking Simpson had been sent to prison for 18 months and there had been ill-feeling between his family and Simpson's ever since.