Prime Minister David Cameron has offered his condolences to the families of three men who were killed while trying to protect shops from looters in Birmingham.
Speaking during a visit to a West Midlands Police command and control centre in Edgbaston, Birmingham, Mr Cameron described the deaths as "truly dreadful".
Asked what he would say to the victims' families, the Prime Minister replied: "They have my deepest condolences. I think everyone in the country is going to be thinking about them and their families and what happened."
Mr Cameron added: "It was a truly dreadful incident and I know that the police here in Birmingham, here in the West Midlands, are working night and day to get to the bottom of what happened and bring the perpetrators to justice.
"We rely on the police to keep our communities, to keep our country, to keep our shops and homes safe.
"They need our support in doing that job."
The father of Haroon Jahan, at 21 the youngest of the three victims, appealed for calm after the deaths of the three men. Tariq Jahan said: "Today we stand here to plead with all the youth to remain calm, for our communities to stand united."
Mr Cameron was visiting Birmingham after the deaths of three men, named by their grieving families as 21-year-old Haroon Jahan and brothers Shazad Ali, 30, and Abdul Musavir, 31.
The friends were struck by a car in Dudley Road, Winson Green, Birmingham, as they attempted to protect a petrol station and nearby stores.
Later, there were touching scenes in Birmingham as hundreds gathered at the petrol station on the main road and held a candlelight vigil. Mr Jahan stood in the middle of the semi-circle of well-wishers as they lit candles. He looked emotional and tired as he was comforted by others, many of whom laid a hand a his shoulder.