Police sought an arrest warrant Sunday for a man on charges of killing a woman at her home in Seoul last week.The victim in her 20s was found dead at her "officetel" home in the northern Seoul district of Eunpyeong on Thursday night after her family filed a missing persons report earlier in the day.The suspect in his 40s was detained at a cartoon book rental store on Friday night and has since admitted to killing the woman during questioning, police said.Officials plan to uncover the exact motive of his crime through further investigation.The suspect had no job and knew the victim through her livestream broadcasts, police said.The National Forensic Service is carrying out an autopsy review to find the exact cause of death.It has earlier said the victim showed signs of death from suffocation.Source: Yonhap News Agency