Iraqi authorities say they have found more than 35 bodies in and around Baghdad since Friday.

They say the bodies appear to be those of victims of sectarian violence that has been gripping the capital and rest of the country. The latest discovery brings the total number of bodies found since Wednesday to more than 135.

In other developments Saturday, at least three bomb attacks in Baghdad killed at least three people.

Hours earlier, Iraq's Interior Ministry announced it plans to dig trenches around the city to restrict the movement of insurgents. A spokesman says access to Baghdad will be limited to 28 roads with checkpoints.

Separately, two U.S. service members were killed in attacks Friday.

At the White House Friday, President Bush acknowledged the situation in Iraq is "tough" and said everyone wants U.S. troops to come home as soon as possible. But he said American troops will remain until Iraq's government can protect itself. He said he will not make military decisions based on political concerns.

Some information for this report was provided by AP, AFP and Reuters