Kim Kardashian was gagged, bound and had a gun to her head in Paris robbery

New details have emerged on the horrifying incident in Kim Kardashian's Paris apartment-hotel room at "No Address Hotel," and the circumstances are even scarier than her rep first let on.

A source revealed to E! News that Kardashian, 35, was was gagged and bound at her hands and feet, then handcuffed and held at gunpoint. "She begged for them to let her live and [said] she has babies at home. Then they wrapped her mouth in tape and put her in the bathtub."

The mother of two reportedly feared the worst as she sat in the bathtub. "She thought they were for sure going to kill her," the source said to E!.

After the men left with "all her jewelry," Kardashian "broke out of her bindings and got out," the source explained to E! News.

PHOTOS: Kim Kardashian earlier in the evening

Kardashian has yet to comment publicly about what transpired in her hotel room, but her rep released a statement late Sunday saying Kim was, "badly shaken but physically unharmed."

The French Interior Ministry said five men entered the premises by threatening a private concierge with a weapon, handcuffed him, and forced him to open Kardashian's private apartment door. The Paris Prosecutor's office confirmed two of the men gained entry to her room. One of Kardashian's rings, worth an estimated $4.49 million, as well as a jewelry box, worth an estimated $5.6 million, were stolen. The ring that was stolen is reportedly the engagement ring that Kanye West famously proposed to her with at the San Francisco Giants stadium.

PHOTOS: A close-up look at the ring

Following the ambush and incident, Kim's sisters, Kendall and Kourtney rushed to be with her alongside several of their close friends including, Terrence J. and Hailey Baldwin.

All of the Kardashian sisters and their friends were attending Paris Fashion Week and were at various parties throughout the evening, while Kim was at the hotel. Her mother, Kris Jenner, was also in Paris at the time of the robbery.

After Kim spoke with Paris police on Sunday, she boarded a private plane with her assistant and personal bodyguard and left Monday. Her sister, Kendall, left shortly after on her own jet.

Kim is reportedly "badly shaken" by the incident and will likely meet her husband, Kanye West, in New York City on Monday. Kanye ended his concert at The Meadows Festival suddenly on Sunday and told the crowd there was a "family emergency."

PHOTOS: Investigators secure the outside of her apartment