KABUL, Afghanistan (AP) -- Military officials in Afghanistan say an exchange of gunfire preceded today's insurgent shootdown of an American helicopter in the central part of the country.
The U.S. crew is safe. The officials say four militants were killed.
But in northern Afghanistan, two American soldiers inside a police station died in a suicide bombing. Four Afghan security officers were wounded. It's not known whether the bomber was a police officer, or someone wearing a police uniform.
Afghanistan is becoming increasingly dangerous, partly because Taliban militant attacks are more deadly and complex than they were in the early days of the 2001 U.S. invasion.
(Copyright 2008 by The Associated Press. All Rights Reserved.)