As Angor was ready to depart, he saw Alda returning to reality with a terrified look.
"Mister Dison, you gotta come! There's an accident!"
Angor stopped to listen to Alda's further explanation.
According to Alda, two residents in the Foundation City, who used to be rivals when alive, met with each other and started a fight, resulting in one of them being "killed". As in, the man's consciousness was entirely eliminated.
Freud did relevant tests before. If the consciousness of someone still alive was forcefully pulled into the dream wasteland, killing the consciousness would instead wake them up, leaving no noticeable aftereffect apart from some bad memories. However, those who could only survive as their consciousness would die for real.
To prevent this, Freud already appointed guards in the city, but it seemed this would not fully stop crimes.