A professor and two students were stabbed in a university classroom in the Canadian city of Waterloo on Wednesday, police said.
A man has been arrested in connection with the attack.
Waterloo Regional Police said it took place in a ground-floor classroom at Hagey Hall, a building near the university’s main entrance.
The victims' injuries were serious but not life-threatening, police added.
Nick Manning, the university's associate vice president of communications, identified the suspect as a member of “the university community” but declined to confirm the individual is a student.
“Our entire community is really concerned that this would happen here. It’s a big shock,” he told reporters.
Yusuf Kaymak, a student at University of Waterloo, told CTV News the attack happened in a gender studies class.
“The guy basically walked in and asked the teacher if he was the professor, he said ‘yeah’ then he pulled out a knife and after that, everybody just ran out,” Mr Kaymak said to CTV.
“I ran out, and after we went outside, there was a kid that was stabbed. He was bleeding [from] his arm. I don’t know what happened to the professor,” he said.
Mr Kaymak said about 40 students were in the class at the time.
The University of Waterloo ordered students to leave Hagey Hall after the attack and cancelled all classes there until Thursday. It said there was no further risk to the campus community and that all other campus activity would continue as usual.
UAE currency: the story behind the money in your pockets
TOUCH RULES
Touch is derived from rugby league. Teams consist of up to 14 players with a maximum of six on the field at any time.
Teams can make as many substitutions as they want during the 40 minute matches.
Similar to rugby league, the attacking team has six attempts - or touches - before possession changes over.
A touch is any contact between the player with the ball and a defender, and must be with minimum force.
After a touch the player performs a “roll-ball” - similar to the play-the-ball in league - stepping over or rolling the ball between the feet.
At the roll-ball, the defenders have to retreat a minimum of five metres.
A touchdown is scored when an attacking player places the ball on or over the score-line.
UAE currency: the story behind the money in your pockets
Naga
%3Cp%3E%3Cstrong%3EDirector%3A%C2%A0%3C%2Fstrong%3EMeshal%20Al%20Jaser%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EStarring%3A%C2%A0%3C%2Fstrong%3EAdwa%20Bader%2C%20Yazeed%20Almajyul%2C%20Khalid%20Bin%20Shaddad%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3ERating%3A%20%3C%2Fstrong%3E4%2F5%3C%2Fp%3E%0A
BULKWHIZ PROFILE
Date started: February 2017
Founders: Amira Rashad (CEO), Yusuf Saber (CTO), Mahmoud Sayedahmed (adviser), Reda Bouraoui (adviser)
Based: Dubai, UAE
Sector: E-commerce
Size: 50 employees
Funding: approximately $6m
Investors: Beco Capital, Enabling Future and Wain in the UAE; China's MSA Capital; 500 Startups; Faith Capital and Savour Ventures in Kuwait
SCHEDULE
Saturday, April 20: 11am to 7pm - Abu Dhabi World Jiu-Jitsu Festival and Para jiu-jitsu.
Sunday, April 21: 11am to 6pm - Abu Dhabi World Youth (female) Jiu-Jitsu Championship.
Monday, April 22: 11am to 6pm - Abu Dhabi World Youth (male) Jiu-Jitsu Championship.
Tuesday, April 23: 11am-6pm Abu Dhabi World Masters Jiu-Jitsu Championship.
Wednesday, April 24: 11am-6pm Abu Dhabi World Professional Jiu-Jitsu Championship.
Thursday, April 25: 11am-5pm Abu Dhabi World Professional Jiu-Jitsu Championship.
Friday, April 26: 3pm to 6pm Finals of the Abu Dhabi World Professional Jiu-Jitsu Championship.
Saturday, April 27: 4pm and 8pm awards ceremony.
