(CNN) At least seven students were killed and 12 injured in a knife attack at a middle school in Shaanxi province, China, on Friday evening, according to the state-run Xinhua news agency. A male suspect was arrested by police and an investigation is ongoing, Xinhua reported, citing local government officials. Last year, a man climbed over the wall of a kindergarten and attacked 11 students. In 2016, a man in the southern province of Hainan stabbed 10 children before killing himself, authorities said. And another man killed three students at a school in 2014 before jumping off a building.

Source: CNN April 27, 2018 19:09 UTC