According to the investigation, on the afternoon of Sept. 21, the three boys and the girl were hanging out as the girl gave her boyfriend among the group a piece of paper noting that two boys had lured her to go with them and then raped her.
As she identified the two boys by names, her boyfriend discussed the issue with his friends and they decided to handle one of them.
The three of them took a knife and drove to the target boy's house on two electric bikes.
Seeing the boy sitting in front of his house, two of the group rushed in, grabbed his neck, slashed him several times, and then ran away.
The victim was rushed to hospital, but he did not survive.