Lidia Motylska, 19, was strangled in an alleyway in Leeds by Iraqi immigrant Abobakir Jabari who objected to his Kurdish flatmate’s relationship with her.

Yesterday Jabari, 39, who was given British citizenship in 2005, pleaded guilty at Sheffield Crown Court to murdering the petite Polish teenager.

The court heard he garrotted her from behind, using the cord from his tracksuit bottoms, before inflicting “gratuitous” wounds on her lifeless body. He stabbed her repeatedly in the chest and stomach and slit her throat.

Sentencing Jabari to life imprisonment with a minimum tariff of 19-and-a-half years, Mr Justice McKinnon said the murder involved an exceptional degree of violence.

“There is a suspicion that you lured this young woman to her death and marked your disapproval of her and her relationship by gratuitous violence upon her,” he said.