A Macedonian policeman was killed and the other two were seriously injured after their vehicle was fired by unknown armed men. The driver lost control, and their jeep crashed on the border with Kosovo.
The officers were patrolling the border, when they were attacked by an armed group near Tanusevci, a village in a volatile ethnic Albanian area some 20 kilometers (12 miles) north of the capital, Skopje, police spokesman Ivo Kotevski said.
"One policeman was killed, and two others were seriously injured," Kotevski told The Associated Press. "The driver lost control, and the vehicle fell into a gorge."
It was unclear, he said, if the officer died from gunshots or from injuries sustained in the crash.
Kotevski was unable to confirm a report by state MIA news agency that the gunmen had entered Macedonia from Kosovo. He said special police forces had launched a massive search for the gunmen.
In Kosovo, an official with the NATO-led peacekeeping force said the gunmen were believed to have fled to Kosovo.