Amrani had been arrested on suspicion of affray on 10 February Getty

A convicted rapist is suspected to have killed his parents in west London before taking his own life.

Ashraf Amrani, 30, was found dead on the roof of a first-floor flat at Landor House, Westbourne Park Road, Paddington. The bodies of his parents, Zohra Amrani, 59, and Hassan Amrani, 72, were discovered at the property 24 hours later.

Police are treating their deaths as suspicious and a murder investigation has been launched. They are not looking for anyone else in connection with the incident. The son's death is described as "unexplained".

A post-mortem examination for the couple, originally from Morocco, is due to take place in Westminster tomorrow (17 February).

The death of Amrani follows just days after he was arrested on suspicion of affray. He was convicted of raping a 23-year-old woman in 2010 and jailed for seven years and two months.

He reportedly carried out the rape at his family flat where his parents were found dead on Saturday. Police had gone to inform the couple about their son's death.

Neighbours have paid tribute to the "lovely couple", who also have a daughter and grandson.

"They were just a really nice couple. I'm just so shocked. They were always so nice,' she said.

"She would always go and see her daughter and grandson."

Another neighbour living in the same block said Amrani prevented police from entering the flat on Thursday.

She said: "The last time I saw the wife was on Thursday and she didn't look happy. She looked a bit fed up and sad.

"She said her husband had called her and said there was some trouble in the house."

Scotland Yard confirmed a man had been arrested on 10 February on suspicion of affray and had been due to answer his bail on Wednesday, 18 February.

A spokesman said a referral will be made to the Independent Police Complaints Commission.