Following this, Trinamool Congress activists showed black flags to him.
"The governor has every right to ask questions and if needed give suggestion (to state government). There is nothing wrong in it," Roy told reporters at the sidelines of a birth anniversary programme of Shyama Prasad Mukherjee.
"As far as I know him (Tripathi), he is not the kind of a person who can humiliate or insult someone," Roy said.
Commenting on the riots, Roy said, "I have seen riots in Bengal both during Left regime and in TMC regime. But the attitude of this government is to suppress the matter. The media was also shy of reporting the riots earlier.
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"But the fact is you can't cure a disease by hiding it. You have to give medicine and treatment to cure it. Hiding a problem will not solve it, you have to take action to solve it," he said at the programme in Calcutta University campus.
The Tripura governor refused to comment on being shown black flags.