Inspector-general of police Khalid Abu Bakar has ordered that a Twitter user be investigated over a posting, which mentioned Prime Minister Najib Abdul Razak as well.
The Twitter user 'Firamond' had tagged the police chief in the posting, which read: "Bodoh (stupid) dan samseng (thug). After make sweet deal with Najib, he think he more powerful than Agong."
The post also tagged R Sri Sanjeevan's anti-crime watchdog MyWatch's account.
"Please track and summon this tweet handle over what he meant by 'sweet deal'," the police chief tweeted this afternoon.
In an earlier tweet, which tagged the Prime Minister's Press Office and Najib himself, Firamond said the prime minister was seeking more donations to settle the 1MDB debt.
This was in response to the Press Office's tweet of Najib meeting with Sheikh Dr Saad bin Nasser Al-Shathri, adviser at the Saudi Royal Court in Putrajaya earlier today.
Meanwhile, Sanjeevan, who filed a report with the Malaysian Anti-Corruption Commission against Khalid, has been on a Twitter rampage against the police chief.
In his report, Sanjeevan, 31, who has been charged three times in relation to extortion allegations, claimed conflict of interest involving a shooting academy belonging to Khalid’s brother.
According to the Companies Commission of Malaysia documents, the police chief's brother, Abdullah, is a director in Unggul Shooting Academy.
The firm was incorporated in November 2013, six months after Khalid was appointed IGP.
Sanjeevan also alleged that there had been a rise in shooting-related crimes since Khalid became IGP.
Quizzed on this last week, Khalid said: "I don't think I need to answer to a criminal who has been charged in court."
Describing Sanjeevan as a criminal led to an opposition MP locking horns with the police chief over the term, arguing that the MyWatch chief was still a suspect since he has not been convicted.
In response, Khalid responded with a screen capture of an online dictionary’s definition of the word “criminal”.