DAP supremo Lim Kit Siang today asked if inspector-general of police Khalid Abu Bakar would come after him for questioning if the top cop has lost his mind.

He asked if Khalid has "gone bonkers" with regard to the police's latest probe against Universiti Malaya lecturer Khoo Ying Hooi over an article entitled "Who owns the police?" published in The Malaysian Insider .

"Would the IGP now set the police after me for asking whether he has gone bonkers in ordering the police to investigate Khoo under Section 500 of the Penal Code for criminal defamation of the police, when Khoo's article was a very innocuous piece raising the most legitimate questions about political protests and protest policing?" he said in a statement today.

Aside from questioning Khalid's state of mind, Lim also criticised the top cop's English proficiency and his comprehension of Khoo's article.

The article commented on the police's handling of the March 7 rally to protest the jailing of opposition leader Anwar Ibrahim.

Lim made reference to Khalid's posting on Twitter which read: "KYH's article in MI is misleading the readers, when did @PDRMsia allow the 7th (March) street protest?"

Chastising Khalid's language skills, the DAP leader said Khoo stating that the police had earlier "allowed" the rally to proceed did not necessarily mean a legal approval.

"All that it meant was that the police did not disturb or disrupt the rally and permitted it to be held smoothly.

"What is wrong with that statement. What is the criminal defamation against the police in such a statement?" he asked.

Lim said this followed another investigation involving DAP's Petaling Jaya Utara MP Tony Pua where the police mistook the MP as attacking the royalty.

Pua, in criticising the police, had said, "Royal my foot."

"I have said in Parliament that Khalid’s grasp and comprehension of the English language are far from what a top cop in Malaysia should possess.

"Or he would not have thought that Pua’s tweet 'Royal my foot’ was an attack on the royalty, a mistake no person with minimum grasp of English language would commit," said Lim.