• Kylie Jenner took the stand in the ongoing trial of Blac Chyna's defamation lawsuit against the Kardashian-Jenner family
  • Kylie said she saw her brother Rob Kardashian after his blowout fight with Chyna, and he told her that Chyna had tried to kill him
  • The Kylie Cosmetics founder claimed that Chyna threatened her via text, but she did not report it, thinking it was an empty threat

Kylie Jenner claimed Blac Chyna threatened her via text message and attempted to kill her older brother, Rob Kardashian.

Kylie took the stand in the ongoing defamation trial of Chyna's lawsuit against her, her mom Kris Jenner, and sisters Khloe Kardashian and Kim Kardashian. The Kylie Cosmetics founder said under oath that she saw Rob after his blowout fight with his ex-girlfriend, and he told her what had happened between them.

"He used the words, 'She was trying to kill me,'" Jenner was quoted by Page Six as saying at a Los Angeles courthouse. "I assumed that was a death struggle … I remember him being very upset and kind of explaining what happened."

Jenner recounted Rob's story, saying he was playing video games when Chyna allegedly went behind him and strangled his neck with an iPhone cord.

The 24-year-old "Keeping Up With the Kardashians" alum also claimed that Chyna threatened her via text. Both Chyna and Kylie previously dated rapper Tyga.

"She sent me a bunch of devil emojis and said, ‘counting down the days’ to beat me," Kylie said.

Chyna's attorney, Lynne Ciani, asked her why she did not report the threat to the police. Kylie said she didn't take it seriously and instead "took it as an empty threat."

According to Kylie, Tyga told her that Chyna had issues with drugs and alcohol. The "Taste" musician also allegedly informed her that Chyna once used a knife to slice his arm.

"I assumed maybe she was high," Kylie continued.

During her testimony, Kylie shared her take on Rob and Chyna's romance. According to her, she was "a little upset when she learned on the internet that her brother became engaged to Chyna."

"I was actually happy for my brother but at the same time, was curious how things would go with Chyna," she continued. "I actually wanted to be cool with Chyna. I actually spent a lot of time with her son. Despite everything, I wanted it to work out with my brother."

When asked if she believed Chyna only dated Rob "out of spite" because she dated Tyga, Kylie said, "I was hoping no, for my brother."

Chyna and Tyga dated from 2011 to 2014. Kylie and Tyga began dating in 2014, and two years later, Chyna started seeing Rob.

Chyna opened up about her split from Tyga when she appeared on "The Wendy Williams Show" in 2019. Kylie did not cause their breakup, but her immediate romance with the rapper also did not help, as per Chyna.

"With relationships, sometimes things don’t work out," Chyna said, as per People. "Then also, sometimes things just kind of like spread you different ways, and I guess maybe that’s kind of what was going on. The way that it went about, like publicly, wasn’t right. Even not publicly, it wasn’t right."

She confirmed that Tyga never cheated on her with Kylie, but their relationship "expedited" their breakup.

Kylie's mom, Kris, took the stand last week. The Kardashians' momager mentioned Chyna's alleged threat to her youngest daughter. She admitted that when Kylie and Tyga told her about it, she was "alarmed." However, they did not report it to the police and "kept it in the family."

Chyna shares 9-year-old son King with Tyga and 5-year-old daughter Dream with Rob.

Kylie Jenner
Kylie Jenner attends the 2020 Vanity Fair Oscar Party on Feb. 9, 2020 in Beverly Hills, California. Frazer Harrison/Getty Images