Police have arrested Malay Armed Forces Veterans Association president Mohd Ali Baharomn under the Sediton Act in connection with the riot near Low Yat Plaza.
More commonly known as 'Ali Tinju', he was detained for making a racially-charged speech outside the plaza on Sunday night, according to Oriental Daily .
The matter was confirmed by inspector-general of police Khalid Abu Bakar.
On his Facebook page, Mohd Ali wrote that he would be sleeping in the " rumah besi (jail)" tonight.
Mohd Ali became infamous in 2012 when he organised a " butt exercise " outside former Bar Council chairperson Ambiga Sreenevasan's house.
The exercise was in response to Ambiga's role in organising the Bersih rally to demand for free and fair elections.
Ali is also the coordinator of a group known as Sekretariat Gabungan Sahabat 1Malaysia and is believed to be an information chief of an Umno branch.
Police had already announced they were looking to arrest blogger Papagomo , whose real name is Wan Muhammad Azri Wan Deris, for sedition.
Wan Muhammad Azri had allegedly circulated misleading information on social media to fuel the mob outside Low Yat Plaza on Sunday.
The mob had gathered in response to a brawl in Low Yat Plaza on Saturday which resulted from a phone theft incident.
After hours of tense standoff with the police, the mob attacked several people, including journalists, in the Bukit Bintang area. At least six people were injured.
Police have made 19 arrests and have called for witnesses to step forward.
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