An investigation has been launched into the death of a French streamer known for extreme challenges.

Raphaël Graven, also known as Jeanpormanove, was found dead at a residence in Contes, a village north of Nice, prosecutors said.

The 46-year-old had been subject to bouts of violence and sleep deprivation during streams, and died in his sleep during a live broadcast, local media reported.

Confirming a judicial investigation was underway, French government minister Clara Chappaz described Mr Graven's death and the violence he endured as an "absolute horror", adding he had been "humiliated" for months.

A spokesperson for Kick - a live-streaming platform similar to Twitch, on which users can broadcast content and interact with other users in real-time - told the BBC the company was "urgently reviewing" circumstances around the streamer's death.

"We are deeply saddened by the loss of Jeanpormanove and extend our condolences to his family, friends and community," they said.

The platform's community guidelines were "designed to protect creators" and Kick was "committed to upholding these standards across our platform", the spokesperson added.

Chappaz, the minister delegate for artificial intelligence and digital technologies, said she had referred the issue to Arcom, the French media regulator, and Pharos, a French system used to report online content.

Sarah El Haïry, France's High Commissioner for Children, described the death as "horrifying".

"Platforms have an immense responsibility in regulating online content so that our children are not exposed to violent content. I call on parents to be extremely vigilant", she wrote on X.

The prosecutor's office confirmed it had opened an investigation into the cause of death and ordered an autopsy, the AFP news agency reports.

Jeanpormanove had more than one million followers across his various social media platforms and had built a strong community on Kick.

One of his co-creators, Naruto, announced Jeanpormanove's death on Instagram and paid tribute to his "brother, sidekick, partner," and asked people to "respect" his memory and not republish any clips showing him dead or unconscious.

Owen Cenazandotti, a fellow French streamer who appeared alongside Mr Graven in his recent streaming marathon, has asked followers not to share videos of his "last breath" in a post on Instagram.