The brother of British hostage David Haines murdered by Islamist militants has issued a tearful video statement about growing religious radicalisation in which he quoted a verse from the Koran.
"We are seeing more and more radicalisation in every walk of life. It is not a race, religion or political issue, it is a human issue," Mike Haines told British media.
His voice breaking with emotion, Mr Haines read out a passage from the Koran saying: "Since good and evil cannot be equal, repel thou evil with something that is better."
He added: "The Muslim faith is not to blame for ISIL, nor is it the fault of people of Middle Eastern descent."
Aid worker Mr Haines was kidnapped in Syria in March 2013.
His murder was revealed in a video released late yesterday by militants from Islamic State -- also referred to as ISIL -- an extremist group that has taken over a vast territory in Iraq and Syria in recent months.
"ISIL are extremely dangerous and pose a threat to every nation, every religion, every politics, every person," Mike Haines said.
He added that British jihadists who return to the country should "face the consequences of their actions".
He had earlier issued a written statement paying tribute to his brother, who he said was "most alive" when doing aid work.
Earlier, British Prime Minister David Cameron said Britain was ready to "take whatever steps are necessary" to destroy Islamic State militants.
After chairing a meeting of the government's emergency Cobra committee, Mr Cameron said the extremists behind the beheading of David Haines were the "embodiment of evil".
"We will hunt down those responsible and bring them to justice, no matter how long it takes," the grim-faced premier said in a televised statement from Downing Street.
He continued: "Step by step we must drive back, dismantle and ultimately destroy ISIL (IS) and what is stands for. We will do so in a calm, deliberate way but with an iron determination.
"We will not do so on our own, but by working closely with our allies, not just the United States and in Europe, but with our allies in the region."
