Death in Kardashian family! Who died? Is it Kris Jenners mom?

The Kardashians are devastated.

In "The Kardashians," the Kardashian-Jenner family experiences a difficult realisation as they learn the heartbreaking news of Tristan Thompson's mother's sudden death after a heart attack.

Khloé Kardashian is reliving the horrifying moment she discovered Andrea Thompson, Tristan Thompson's mother, had passed away.

The Kardashian-Jenner family finds out that the former NBA star's mother passed away abruptly following a heart attack in a preview for the season 3 finale of The Kardashians, which airs next week.

The 67-year-old Kris said to the cameras, "It's been a rough week." Kim, 42, agreed with her mother in saying, "This was just a really, really shocking way to start the new year."

The mother was sobbing as she tried to comprehend what it would be like to be Tristan.

“All of a sudden, you’re stripped of the caretaker that you had your whole life,” she told her two daughters.

The 39-year-old Khloé revealed in a confessional interview that her ex was "screaming on the phone, trying to tell me that she's gone."

According to a source who spoke to PEOPLE, Andrea passed away on January 5 after a heart attack at her Toronto home. The news was initially reported by TMZ Sports.

According to a source, Tristan travelled to Toronto to be with his family after she passed away, and his ex-girlfriend Khloé joined him to support him and help him get through the coming days. The source also said that Khloé and Andrea were close.

Then, on January 14, Khloé, Kim, and Kris attended Andrea's burial in Toronto, a source told PEOPLE. Kris spoke at the funeral services, according to a different source who also informed PEOPLE.

"They all want to be there for Tristan," the first source said. "He will always be family. It's a devastating situation for him. They want to do everything they can to support him."

However, the news about the death of Kris Jenner's mother, which has taken the internet by storm, is not true. It's just a rumour.

Although, Kris did share a touching homage to Andrea on Instagram, describing her "heartbroken" emotions over the "sudden passing."

"You were the most amazing, dedicated, devoted, and selfless mom and such a loving, kind, and fabulous grandmother," she wrote. 

"What a blessing you were to your family!!! I will miss you Andrea. I will miss your bright spirit and amazing light."