Confessed to stabbing 'killer' to death and chopping him up in 12 pieces

An Indian man who witnessed his father's murder as a child has confessed to killing the man responsible in a revenge attack he planned for 12 years.

Alam Khan was just 12 when he saw his father being murdered by Mohammad Rais, a family friend, in the state of Uttar Pradesh in 2003.

Khan, now 24, has confessed to stabbing Rais to death, before chopping his body into 12 pieces, one for every year since his father was murdered.

Killer: Alam Khan, 24, witnessed his father's murder in 2003, and spent the next 12 years plotting his revenge

Khan said he had secretly planned his revenge ever since his father's murder, and finally seized his chance last week when he invited Rais over for a drink.

After getting Rais drunk at his home, Khan knifed him to death before using a hammer and hacksaw to dismember the body, he told reporters on Monday after his arrest.

He and an accomplice then packed the body parts into plastic bags which they threw into a river.

When the bags washed up on the river's banks, police were only able to identify Rais from a surgery scar on his torso.

Khan was arrested after witnesses recounted how Rais had last been seen visiting his home, and made a full confession.

Confession: After getting Rais drunkl, Khan knifed him to death before using a hacksaw to dismember the body intro 12 pieces - one for each year since his father's murder - and throwing the body parts into a river

'I played some music at full volume and cut his body into 12 pieces,' Khan was quoted as saying by the Times of India.

Khan had never told anyone about the identity of his father's killer and had instead waited for 12 years to 'realise his dream' of taking revenge. He was 'happy it was now done'.

Police Superintendent Ram Suresh Yadav told the newspaper Khan had confessed to his crime with an 'utter lack of remorse'.