A Nepalese working for a civilian security company was shot dead in an ambush as he was delivering mail for the UN, a military spokesman said. And one Iraqi was also reported to have been killed during the protests, although it was unclear how this happened.

Streets were barricaded with burning tyres as tempers boiled over in temperatures of up to 57oC and high humidity. According to the British forces, the protests took place in four separate places in the north of the city, involving around 1,000 demonstrators in all. Major Charlie Mayo, a spokesman for the coalition, told he felt ?concerned? by the mood in Basra.

?But we?re confident that if we can get the fuel to the people (...) we are working very hard to get the power up and running, then things will calm down. But It?s not easy. It?s very hot, the temperatures are very high, it?s a tough environment. We are working very hard with the Iraqi people to get this right.?

Earlier he stressed that the trouble was not on the scale of Saturday?s violence when an estimated 2,000 people took to the streets. But he did say that coalition troops were fired upon and gave fire in return, as well as giving warning shots.

?Not political?

Fuel shortages and electricity black outs have left air conditioning units and fridges without power. ?They did not give us what they promised, and we have had enough of waiting,? said Hassan Jassim, a 19-year-old student at Basra?s vocational school.

?It?s not political. We don?t have gas, power or salaries. I am not against this coalition, all I want is water,? said Fadil Salman, a driver.

The UK forces had hoped to avert a repeat of Saturday?s trouble by providing fuel in tankers and guarding the petrol stations. But as the temperatures soared, hundreds of people took to the streets again.

The governor of Basra, Wael Abdul-Latif, appeared on television appealing for calm. The order was restored when Muslim clerics appealed for calm. He said the British army was going to approach the clerics again to ask them to repeat their appeal. The fuel shortages have been exacerbated by some Iraqis bringing down power lines in order to loot valuable copper from the wires.

The resulting power cuts have meant the oil refinery has not been able to work and so diesel and petrol cannot be produced. It is believed that Kuwaitis have also been smuggling cheap fuel out of Iraq. ?There is no fuel and our situation is terrible,? said Abdul Karim al-Mussawi, 45, a construction worker.