At least 100-thousand people have rallied in southern Pakistan against a possible US-led war in Iraq.
The crowd estimate comes from police who kept a close watch on Sunday's march in the port city of Karachi.
Marchers shouted slogans that included "no blood for oil" and "the world says no to war." Some carried signs condemning President Bush.
Karachi has been the site of several attacks against U-S targets over the past year, including the kidnapping and murder of U-S journalist Daniel Pearl.
Islamic groups that organized Sunday's march had called for a rally of a million people, and claimed much larger crowd totals than police. Either way, the rally was one of the biggest anti-American demonstrations to take place in Pakistan in recent years.
Pakistan holds one of 15 seats on the United Nations Security Council, and the government says it has not decided whether it will vote for a new U-S-backed resolution on Iraq that could pave the way to war.