A teenager pregnant with her rapist's baby was brutally murdered by her fiance after he found out about the sex attack in Turkey, according to reports.

Oya Budak, 18, was five-and-a-half months pregnant when she was shot dead in the apparent honour killing, Turkish news agencies said.

She was taken to hospital with a gunshot wound to the chest but died along with her baby, local media reports.

Ms Budak reportedly became pregnant after being raped by another man several weeks before her engagement.

Her fiance is said to have ended the relationship when he became aware of the situation.