Three British troops have been killed and eight others injured in a suicide attack by rebel fighters in Iraq.
A vehicle was blown up at a Black Watch checkpoint, then the troops were shot at. An Iraqi translator also died.
The victims were among an 850-strong battle group led by the 1st Battalion The Black Watch which recently moved to a base 20 miles south of Baghdad.
The group has been attacked several times since moving in. A total of 73 British troops have now died in Iraq.
Six of the injured soldiers are back at base. The other two are expected to be discharged from hospital on Friday.
A spokesman for Tony Blair said: "The Prime Minister's thoughts are with the Black Watch and the families of The Black Watch."
A BBC reporter in the area said the deaths had shocked the force.
"It will have hit the regiment very hard - they are a very close Scottish regiment with a long and proud history."