Westminster terror attacker Khalid Masood, who was shot dead on Wednesday at the age of 52

Terrorist Khalid Masood enjoyed marathon sex sessions with prostitutes while high on drugs, his friends have claimed.

Masood was 'not a proper Muslim' according to people who knew the killer responsible for Wednesday's terror attack in London.

The attacker, born Adrian Elms, died after he was shot by police when he stormed the Palace of Westminster and stabbed police officer PC Keith Palmer to death.

He had ploughed into crowds with a 4x4 on Westminster Bridge, killing three and leaving 29 injured.

The 52-year-old's friends have now claimed he frequently got high on drugs including crack cocaine and acid.

As a teenager he was popular with girls and fronted a band named Alternative AD - AD being the nickname given to the talented athlete and signer, who friends said had a voice 'like Marvin Gaye'.

According to the Sun, his former landlady Cassie Havard, kicked him out after he spent thousands of pounds on hookers.

She said: 'He wasn’t a proper Muslim. He s*****d prostitutes, smoked copious amounts of crack and stuck knives in people’s faces.

'He was a madman. After one four-day crack session, one druggie pal got paranoid and accused him of being an undercover cop.

Masood's friends have now claimed he frequently got high on drugs including crack cocaine and acid

Masood was born Adrian Elms and then went by Adrian Ajao through his teens, above, before becoming Khalid Masood later in life

His long-term partner Jane Harvey, 48, a successful businesswoman, who he lived with in Rye

'Adrian went absolutely wild and ran to the kitchen to grab the biggest knife he could find.

'He went back in the room and slashed the guy’s face to pieces.'

Another friend told the paper he would get through a cocktail of drugs 'like a steam train'.

One added: 'He went to clubs and raves but mainly house parties. He was a party animal.

'While on ecstasy he would go on for hours. But while winding down he would get a joint and listen to Bob Marley.'

Masood claimed to have taught English in Yanbu, Saudi Arabia, in 2005. He returned to the Middle Eastern country three years later, where he taught in Jeddah.

And in March 2015 he made a trip to Mecca on pilgrimage.

It comes as it has also emerged that Masood funded his rampage with taxpayer money, as the 52-year-old was living on benefits.

Parents at Brookfields Primary School in Birmingham, where Masood's two children were pupils, had complained to teachers about the robe-wearing extremist, The Express reports.

He was described as 'foul smelling', and mum Sabrina Hussain said he gave her the 'chills'. She banned her daughter from visiting Masood's home, despite her being best friends with his youngest child.

The Daily Star Sunday reports that police are now probing claims he was a serial benefits cheat, claiming hundreds a month in housing benefits and income support.

Masood's drive of terror began at approximately 2.40pm on March 22 when he used a rented Hyundai to mow down pedestrians on the Westminster Bridge before ploughing the car into the Carriage Gates of Parliament.

He then got out of the car and ran towards the House, stabbing PC Keith Palmer on the way, who died of his injuries.

Four people have died, excluding the attacker, including PC Palmer, Londoner Leslie Rhodes, 75, US tourist Kurt Cochran, 54, and mother-of-two Aysha Frade, 43.

Metropolitan policeman Keith Palmer (left), Mother-of-two Aysha Frade (centre) and US tourist Kurt Cochran (right) have been named as victims of the attack

In the aftermath of the worst terrorist attack in Britain since 7/7, it emerged that Masood had been born Adrian Russell Elms to an unmarried teenage single mother and had drifted into drugs and crime while still a teenager.

In 1991 he met his long-term partner Jane Harvey, 48, a successful businesswoman. He then moved into her £700,000 home in the well-to-do village of Northiam, near Rye in East Sussex.

The couple went on to have two daughters and Masood worked as a manager in Miss Harvey's business, Aaron Chemicals.

A friend, who did not want to be named, said Masood had been a 'charming' young man at the time when he met Miss Harvey.

Of Miss Harvey, known to her friends as Jay, she said: 'Jay's a very efficient, business type person. She's always provided for her children.'

But when their oldest daughter was eight, Masood was jailed for two years after slashing a man's face with a knife in a violent confrontation outside a local pub. He tried to blame racism for the appalling violence, which left his victim Piers Mott needing 20 stitches to a gaping wound in his cheek.

Masood – still using the name Adrian Elms – married Farzana Malik at Medway Register Office in Rochester, Kent

Neighbours said he was radicalised during that two-year jail sentence, and abandoned his old life after his release from prison, including Miss Harvey and their two young daughters. One villager said: 'When he got out of prison he decided he wanted to live an Islamic life and didn't want anything to do with his past life at all.

'He left Jay and the girls and went to live in some dump in Eastbourne, and I think he met someone else. He never came back after that and Jay was left to bring up the two girls on her own.'

In 2004, Masood – still using the name Adrian Elms – married Farzana Malik, then a 25-year-old marketing assistant, at Medway Register Office in Rochester, Kent.

The couple have since split and she has married again.

His next long term relationship was with Rohey Hydara, 39, with whom he shared a series of short-term homes in London and Luton.

Last night, the Met said Ms Hydara was released on bail pending further inquiries. She was arrested on suspicion of preparing terrorist acts.