British Prime Minister David Cameron says his country will remain "resolute" in its stand against extremism and terrorism after the horrific killing of a British soldier in London.
The victim, identified as 25-year-old soldier Lee Rigby, who had served in Aghanistan, was hacked to death by two men wielding a meat cleaver and a knife and shouting Islamic slogans.
Both suspects urged passersby to record their rants after the attack, in which they tried to behead the victim after running him down with a car, and both men were shot and wounded before being arrested by police.
Police later said they had arrested two more people -- a man and a woman, both aged 29 -- on suspicion of conspiracy to murder in connection with the attack.
The May 22 killing took place in broad daylight near an army barracks in the capital's Woolwich neighborhood.
Cameron held an emergency meeting of his intelligence chiefs on May 23.
Speaking outside his London residence following the meeting, Cameron warned against blaming Muslims for the attack.
"This was not just an attack on Britain and on the British way of life. It was also a betrayal of Islam and of the Muslim communities who give so much to our country," he said. "There is nothing in Islam that justifies this truly dreadful act."
Cameron said responsibility lies solely with the "sickening individuals" who carried out the attack.
He pledged to bring the perpetrators to justice and said such assaults will not succeed in dividing the nation.
"What happened yesterday in Woolwich has sickened us all," he said. "On our televisions last night and in our newspapers this morning, we've all seen images that are deeply shocking. The people who did this were trying to divide us. They should know something like this will only bring us together and make us stronger."
Reports say at least one of the suspects in the murder is a British citizen of Nigerian descent.
Local media named him as British-born Michael Adebolajo, 28. Police reportedly raided his family's home in a village near the British city of Lincoln.
Witnesses say the attackers used a car to run down their victim before attempting to behead him.
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Video shot at the scene minutes after the killing showed a man with his hands covered in blood, saying the killing was revenge for Britain backing wars in Muslim countries and urging Britons to "remove your government."
Britain has had troops in Afghanistan since 2001 and deployed soldiers to Iraq between 2003 and 2009.
The victim was wearing a T-shirt bearing the inscription "Help for Heroes," the name of a charity helping wounded British veterans.
On May 22, some 100 supporters of the far-right English Defense League took to the streets in response to the killing.
In separate incidents, two mosques outside London were attacked.
With reporting by Reuters, AP, and AFP