BAGHDAD, July 8 (Xinhua) -- Seven United States soldiers were wounded by unknown attackers in and around Baghdad on Tuesday as the U.S.-led coalition administration announced a reward of 2,500 U.S. dollars for information leading to the arrest of any killer of a coalition soldier or Iraqi police officer.

　　Two U.S. soldiers were injured when attackers dropped a homemade bomb from a bridge onto a passing U.S. military convoy in Baghdad, a U.S. military spokesman said.

　　Another two soldiers were wounded when their vehicle struck a land mine in the capital, the military spokesman said.

　　In Kirkuk, 286 kilometers north of the capital, assailants fired a rocket-propelled grenade at a military convoy, injuring three U.S. soldiers.

　　Bernard Kerik, the U.S. official running Iraq's interim interior ministry, said Tuesday the U.S.-led provisional authority would pay at least 2,500 dollars for information leading to the arrest of anyone responsible for shooting or murdering a member of the occupying military forces or the Iraqi police.

　　"I urge the Iraqi people to come forward to take these people off the streets of the country," the former New York police commissioner said. End