Seoul: A man shot and killed his son with a homemade gun during a birthday party he threw for his father, police said Monday. The tragic incident unfolded in an apartment in Incheon, situated west of Seoul, where the family had gathered to celebrate on Sunday night.

According to Yonhap News Agency, the 63-year-old shooter was detained by police without a warrant early Monday. The authorities were alerted to the shooting at 9:31 p.m. on Sunday, prompting swift action. The police are currently investigating the circumstances that led to the fatal shooting, seeking to understand the motive and the events leading up to the incident.