A Muslim man who stabbed his girlfriend to death after she offended his honour by secretly filming the two of them engaging in a sex act has been sentenced to 20 years in jail by an Austrian court.

The 45-year-old man had stabbed his 40-year-old partner twice in the neck after he realised that a video of the two of them was circulating among their friends.

The woman bled to death in a stairwell while fleeing her lover – neither of whom were named at the court in Vienna, due to local privacy laws.

The 45-year-old man entering the court in Vienna, where he was sentenecd to 20 years behind bars

According to state prosecutor Michael Schietz, the Muslim man 'became enraged, because anal intercourse is taboo for Muslims, and because he was being treated derogatorily by acquaintances when they realised what he had been doing.'

Schietz added that the woman had been worried that her boyfriend was going to leave her so had filmed the video and then threatened to distribute it if he ever walked out on her.

The man claimed that he had tried to kill himself at first with the six-inch kitchen knife by prodding it in the area near his heart.

The Muslim man 'became enraged, because anal intercourse is taboo for Muslims', and because he was being 'treated derogatorily by acquaintances when they realised what he had been doing'.

His girlfriend had then tried to wrestle the knife off him and they got in a scuffle, during which she received the injuries to her neck. He said the injuries were an accident.