A man in Seongnam, South Korea, drove his car onto a sidewalk and stabbed at least 14 people in a shopping mall.
This marks the second mass stabbing incident in South Korea in a month.
The assailant's motive is unclear, but he had a history of mental illness.
President Yoon Suk Yeol called for enhanced vigilance on social media and increased law enforcement presence.
Two car-ramming victims were critical, and eight stabbing victims had serious injuries.
A previous knife attack in Seoul occurred a month ago, resulting in one fatality.
Measures, including increased nighttime patrols and improved surveillance, are being discussed to prevent future attacks.