(BBC) - Malaysian police have used tear gas and water cannon to disperse thousands of protesters who were marching in Kuala Lumpur to demand electoral reform.
The event was organised by a group called Bersih which is made up of opposition parties and dozens of non-governmental organisations.
The marchers were prevented from entering central Merdeka Square because police said they did not have a permit.
Police estimated the crowd at between 10-30,000 people.
Heavy rains could not stop the marchers as they made their way along the roads on the side of Merdeka Square.
Many of them were in the yellow shirts which organisers had asked them to wear.
Tension has been high in Malaysia ahead of the march
They were calling for changes to the electoral process in Malaysia to prevent fraud.
One demand is to use indelible ink to show who has voted.