Inspector-general of police Khalid Abu Bakar has issued a warning via Twitter to a DAP lawmaker's aide who questioned the arrests with regards to the anti-GST rally.
"Be careful in making extreme allegations towards the police who are carrying out their responsibility to safeguard peace," he tweeted.
— Khalid Abu Bakar (@KBAB51) May 1, 2015
Khalid saw red over Jay Jay Denis' tweet which accused the police of embarking on another move to "terrorise the people of Malaysia" by carrying out mass arrests.
However, the research assistant to DAP MP Charles Santiago remained unperturbed.
In a subsequent tweet, Denis replied that he was standing by his earlier statement.
He also called on Khalid to be frank on the reasons behind the arrest of protesters who participated in the anti-GST rally.
"Why is there a different treatment for other protests?" he asked.
Khalid then responded with another tweet with an image showing graffiti, a small fire and smoke bomb, asking Denis, "Who is terrorising our streets?"
Although he did not mention any protest in particular, it is believed that Denis was referring to the recent protest outside a church in Petaling Jaya.
Some 50 Muslim residents demanded that the church lower the cross on its building. Also present were local Umno leaders.
Though an investigation has been launched, the police have not arrested anyone in connection with the case, which drew widespread condemnation.