Hong Kong (CNN) A prominent Hong Kong academic was arrested Tuesday on suspicion of murdering his wife and stuffing her body into a suitcase.

The case comes as the city is already gripped by the bizarre ongoing trial of another university professor, who is accused of killing his wife and daughter with a gas-filled yoga ball.

At a press conference Tuesday, Hong Kong police superintendent Law Kwok-hoi said a 53-year-old man surnamed Cheung had been arrested on suspicion of murder.

Local media identified the man as Cheung Kie-chung, an associate professor at the University of Hong Kong (HKU) and member of its governing council.

"I am sure that you are as saddened and shocked as I am," HKU Vice-Chancellor Xiang Zhang said in an internal email to staff and students that was provided to CNN.

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