Nov. 16 (UPI) — A former student allegedly used a knife to attack dozens of students at a college in Yixing, China, causing eight deaths and wounding 17 others Saturday evening.

A student upset about failing an exam and not receiving a certificate of graduation as a result carried out the stabbing attack at about 6:30 p.m. local time at the Wuxi Vocational Institute of Arts and Technology, local Chinese police announced Saturday.

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Yixing is 187 miles west of Shanghai.

The attack occurred during the same week another mass casualty event occurred in China.

On Monday, a motorist drove a vehicle into a group of people exercising in Zhuhai, which is located in southern China.

The driver killed 35 and injured more than 40 others, but Chinese officials quickly removed videos of the attack and silenced discussion on social media.

Chinese police in October arrested a 50-year-old man after accusing him of stabbing five people, including three children, at an elementary school in Beijing.

Another knife attack in September caused the deaths of three and injured 15 others at a suburban Shanghai supermarket.

Another incident in September killed 11 and injured 13 when a bus plowed into a group of students and their parents in Tai’an in China’s Shandong province.

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Chinese officials did not say if that event was an accident or intentional.