Dhaka, Dec. 16 -- A caricature of Ghulam Azam and Pro-Vice Chancellor Prof Shamim Uddin Khan, drawn by students in protest over controversial comments on Martyred Intellectuals Day, has been covered with black ink at Chittagong University.

The artwork, painted Monday outside the administrative building, was found blacked out on Tuesday morning.

Abul Hashem, a security guard stationed at the administrative building, said he was on duty until 4am.

"I went to sleep after that. When I returned around 6am, I saw the caricatures had been covered in ink. I didn't see who did it," he added.

The incident has sparked anger among students, while criticism has continued on social media.

Sumaiya Sikdar, a student at the university, posted on Face...