Khloe Kardashian 'ambushed and verbally attacked by her ex husband Lamar Odom outside the gym in LA'

Khloe Kardashian has been left shaken and 'freaked out' after her estranged husband confronted her when she left an exercise class.

The 31-year-old reality star had just finished working out at SoulCycle in LA on Wednesday morning when the incident happened.  

According to American website TMZ  the former NBA star allegedly launched a verbal attack and demanded the reality star speak to him. 

Moment Khloe Kardashian was confronted by her ex Lamar Odom 

An onlooker said Khloe attempted to ignore him but he grabbed her arm. She allegedly screamed: 'Get off of me, get off of me. Stop. Stop.'  

Another eyewitness is said to have asked Khloe if she wanted the cops called.  

Upset: The star was 'freaked out' by the incident 

Lamar allegedly screamed: 'You're not going to call the cops on Lamar Odom.'

Khloe is said to have responded: 'How did you know I was here?'

According to an onlooker, she was visibly upset and freaked out by the encounter, and ran for her car and drove away. It is reported on Wednesday that Khloe had been forced to change her number because her ex wouldn't stop calling her. 

It was only on Sunday Khloe made her first public debut with her new boyfriend James Harden. 

The 25-year-old basketball player accompanied the blonde to her sister Kylie's 18th birthday party, which was held at The Nice Guy and Bootsy Bellows nightclub in Los Angeles.  She had been keeping the relationship very much on the down low until the event. The pair also celebrated July 4th together at a Las Vegas club. 

A source told the publication he had been trying to contact his former wife but she had ignored him.

The insider said: 'It made Khloé first shocked and then scared that Lamar was waiting outside the studio

'She doesn't know how he found her. She is thinking about getting a bodyguard.'

Khloe's sister Kim has also had safety concerns - another source told the magazine Mrs Kardashian-West had been encouraging her younger sibling to get a bodyguard.  

The insider said: 'She told Khloé that his behavior is inappropriate, and she needs to nip it in the bud before it escalates.' 

According to the source Khloe was in full agreement, and she was going to start looking into private security right away.

The insider added: 'Kim says that there's no reasoning with Lamar right now, so it's better to be safe than sorry.'

Meanwhile Khloe and Lamar signed off on their divorce last month. 

The pair, who tied the knot in 2009, split over the former NBA stars alleged drug use and infidelity.

They filed their final divorce papers in July, and it was claimed by TMZ the former couple just needed a judge's signature to make the split official.

It was alleged that the case was in danger of being thrown out earlier this year, but the pair then filed the appropriate paperwork to move forward.

It was only last month in an interview with Complex magazine Khloe confessed she still missed Lamar.

'Oh my god, I miss him every day. I miss what we had,' she told the publication, which had also done a raunchy shoot with the 5ft 10 stunner.

In happier times: Lamar and Khloe