Younger Brother Who Killed Older Sister, Police Fooled by His Meticulous 'Dual Role' Deception

A (27), who was arrested on charges of killing his older sister with a weapon and disposing of the body, is entering the Incheon District Court on the 2nd to undergo a warrant hearing. / Photo by Yonhap News

[Asia Economy Reporter Kang Juhee] It has been confirmed that a younger brother who was caught four months after killing his older sister and dumping her body in an agricultural waterway in Ganghwa-do, Incheon, misled the police investigation after receiving a missing person report from his parents in February this year, causing confusion in the investigation.

According to the police on the 3rd, A (27), who was arrested on charges of murder and corpse abandonment, was investigated at his home after his parents filed a missing person report for his sister B at a police substation of the Namdong Police Station in Incheon on February 14.

The parents lived separately in Andong, Gyeongbuk, and A was the only family member living with B in an apartment in Namdong-gu, Incheon.

After receiving the missing person report for B, the police visited the apartment where A lived around 8 a.m. on February 14.

The investigators asked, "When did your sister last leave the house?" and A replied, "February 7."

The investigators then reviewed the elevator CCTV footage recorded from the morning of February 6 to the afternoon of February 7 with A for about three hours but could not find any footage of B leaving.

When the investigators asked again, "Are you sure it was February 7?" A changed his statement to "early morning of February 6." He also said, "My sister often stayed out overnight, and to hide this from our parents, I said she left the house on February 7."

The police left without checking the CCTV footage from early morning February 6, which A had changed his statement to, because the apartment management office closed after midnight that day.

Younger brother A, accused of murdering his older sister, was escorted to Ganghwa Police Station in Ganghwa-eup, Ganghwa-gun, Incheon City on the afternoon of the 29th of last month. / Photo by Yonhap News

Two days after the police visit, on February 16, A sent the investigators a photo capturing a KakaoTalk message that was fabricated to look like a conversation between him and his sister.

The KakaoTalk message, which A claimed to have received from B at 5:22 a.m. on the same day, read, "You must have been scolded a lot. What’s this about a missing person report? You’re not a child anymore."

A few days later, when A told B to "introduce your boyfriend to our parents and date openly," B replied, "Stop nagging."

Using the same method, A deceived even his parents into believing B was alive and had the missing person report canceled on the 1st of last month.

The KakaoTalk messages that deceived the police were found to be fabricated conversations that A created by inserting B’s mobile phone USIM (Subscriber Identity Module) into another device and sending messages to himself.

Meanwhile, A is suspected of stabbing B multiple times with a weapon at their home in mid-December last year, killing her. He is also accused of leaving B’s body on the apartment rooftop for ten days after the murder and then transporting it by rental car to Seokmodo in Samsan-myeon, Ganghwa-gun, at the end of December, where he abandoned it in an agricultural waterway.

B’s body was discovered by a nearby resident at 2:13 p.m. on the 21st of last month, four months after being abandoned, and the police arrested A in Andong, Gyeongbuk, on the 29th of the same month.

This content was produced with the assistance of AI translation services.