Khloé Kardashian is concerned for Lamar Odom's well-being.

The 30-year-old reality TV star, who was left ''emotionally shaken'' after her soon-to-be ex-husband allegedly verbally attacked her outside an early morning SoulCycle class in Beverly Hills on Wednesday (12.08.15), reportedly insists she had no idea he was going to be there after he insinuated they arranged to meet up.

A source close to the 'Keeping Up with the Kardashians' star told gossip website TMZ.com that while the blonde beauty, who signed her divorce papers last month following her split from the former LA Lakers player in December 2013 after four years of marriage, doesn't feel physically threatened by Lamar, she is worried about him.

The insider also claims Khloé hasn't been in contact with Lamar, 35, for weeks and recently changed her phone number, so there was no way she knew he was going to be outside the gym.

Lamar previously denied ambushing Khloé and lashed out at her for failing to defend him.

He said: ''I live in Las Vegas, so was there an address or a place given, or did I just guess right? How would you think I ended up there?

''It's over. If it happens again, I will air everything out. Nobody got followed, nobody got hassled, nobody got harassed, nobody got grabbed on, none of that. None of that happened. It's just not the truth.''

Khloé, who dumped Lamar following months of rumours he was addicted to drugs and cheating on her, fled to Houston to be with her new boyfriend, James Harden, shortly after the incident took place.