Witnesses and livestream viewers said they heard Ms Sato screaming for help during the attack in the Japanese capital on Tuesday.
Police in Japan have arrested a man after a YouTuber was stabbed to death while livestreaming in downtown Tokyo.
Officers said they arrested Kenji Takano, 42, on suspicion of attempted murder at the scene in the Shinjuku district following the attack on Tuesday.
The victim, Airi Sato, was rushed to hospital with critical injuries after she was stabbed repeatedly in her upper body, police said.
The 22-year-old was later pronounced dead.
Takano has been sent to prosecutors but has not yet been charged.
Witnesses and livestream viewers said that they heard Ms Sato screaming for help during the attack.
Online viewers also said the livestream suddenly went black.
Source: https://news.sky.com/story/youtuber-stabbed-to-death-during-livestream-13328577