Kim Cattrall has thanked her 'Sex and the City' co-stars for their condolences following the death of her brother.

The 61-year-old actress revealed earlier this week that her brother, Christopher Cattrall, had been found dead just hours after stating he had gone missing, and shortly afterwards, Sarah Jessica Parker and Cynthia Nixon - who starred alongside Kim in the hit TV show and two subsequent movies - sent their love to the star on social media.

In a post thanking people for their support, Kim wrote on Twitter: ''I would like to thank my fans, friends, and my #SexandtheCity colleagues for the outpouring of support for myself and family over the last 72 hours.''

Both Sarah Jessica and Cynthia previously took to the comments section of Kim's Instagram post in which she confirmed the tragic news to pay their respects.

Sarah Jessica wrote: ''Dearest Kim, my love and condolences to you and yours and Godspeed to your beloved brother. Xx (sic)''

And Cynthia added: ''Hey Kim such awful news. So sorry to hear. Sending you love. XO (sic)''

It comes after 52-year-old Sarah Jessica said she was ''heartbroken'' after Kim recently slammed the star and her other 'Sex and the City' co-stars, likening them to a ''toxic relationship.

Kim said: ''And that's another thing that's really disappointing is that nobody ever picks up the phone and tries to contact you and say, 'how you doing?' That would have been the way to handle it.

''And usually what happens in a healthy relationship is that someone, or a transaction for a job in my business, is that someone says, 'are you available?' and you say 'yes' and here's the job and you say 'yes but thank you very much but I'm sort of over here right now but thank you very much' and that person turns to you and they say 'that's great, good luck to you, I wish you the best.' That's not what happened here, this is, it feels like a toxic relationship.''

To which Sarah Jessica responded: ''I found it very upsetting because that's not the way I recall our experience. It's sad, but I always think that what ties us together was this singular experience. It was a professional experience but it became personal because it was years and years of our lives, so I hope that that eclipses anything that's been recently spoken. That many years spent doing something so special that people had a connection with it is such a privilege.''