A South Korean man set his flat on fire and then stabbed building residents as they tried to flee, killing five people, police told local media.

The youngest victim was a 12-year-old and 13 others were injured – three of them critically.

The unidentified 42-year-old suspect was detained and police say an investigation is ongoing.

He told police he committed the crimes out of anger about overdue wages, according to Yonhap news agency.