Man held after second stabbing attack in two days in South Korea

An ambulance leaves Songchon High School in Daejeon, South Korea (Kim Jun-beom/Yonhap via AP)

South Korean police have detained a man suspected of stabbing a high school teacher with a knife in the city of Daejeon.

The stabbing follows a separate, apparently random attack on Thursday in which 14 people were wounded near a busy subway station in Seongnam.