A man in his 30s who went to the house of his ex-lover during the probation period and started a knife riot is under investigation by the police.

The Seongdong Police Station in Seoul arrested a man in his 30s at around 3:40 a.m. on the 25th at a multi-family house in Majang-dong, Seoul on charges of attempted murder.

Mr. A is accused of threatening to visit his ex-girlfriend B's ex-girlfriend, who broke up with him, and repeatedly pressure him to open the door, saying, "It's a probation period, so it's better to kill them all."

At the time, Mr. B was with another man, and Mr. A is also accused of threatening to stab with a knife after a physical fight with this man.

Upon receiving the report, the police rushed to the scene and subdue Mr. A using a three-stage stick, and arrested him with back handcuffs.

Person A, who has a previous injury history, was investigated for committing the crime while on probation.

While the police are investigating the details of the incident, the charges of Mr. A will be applied again as house trespassing and special threats.