KUALA LUMPUR: The police fired tear gas and water cannon to disperse crowds in at least five different locations in the city, including Dataran Merdeka.
At least 26 people of the 3,000 at the protest rally were also arrested for their presence today.
The protest in now centralised at Jalan Raja Laut.
Opposition leaders Anwar Ibrahim, Lim Kit Siang and Nizar Jamaluddin are among the protestors in the area.
More than 500 FRU personnel have been mobilised from Johor, Negri Sembilan, Ipoh and Kuala Lumpur to help control the crowds at the rally.
Meanwhile, scores of people are stranded in the city as all main roads are blocked. lRT has stopped its service temporarily to Masjid Jamek as protests continue.