때리고 맞은 두 사람은 형제 사이며 동생이 정신질환을 앓는 형을 일터에 데리고 다녔다는 사실이 나중에 알려졌다.
It was later known that the two men who beat each other were brothers, and younger brother brought his older brother, who has a mental illness, to work.