LONDON, May 25 (Xinhua) -- London police arrested three suspects on Saturday over the murder of the British soldier in a London street this week.

Scotland Yard said in a statement that two men aged 24 and 28 were arrested at a residential address in London while a 21-year-old man was arrested in the street.

The three men were arrested by detectives on suspicion of conspiracy to murder of the British soldier who were attacked and hacked to death in Woolwich in southeast London on Wednesday.

The two suspects shot by police at the scene in Woolwich have been arrested on suspicion of murder and remain in separate London hospitals. Their injuries are not life threatening, police said.

Nearly 2,000 people from around Britain took to the street on Saturday afternoon in Newcastle in northern England to demonstrate against the killing of the British soldier.

The demonstrators were carrying placards and chanting slogans: "extremists off our streets" and "support our troops," while walking along the streets in the city center under heavy police presence.

Paul James, a military veteran from Teesside, northeast England, told Xinhua he thinks the British government "should step up efforts in monitoring radicals and extremists in the country, and should be able to act before incidents like woolwich attack happen."