Militants attacked security forces on two sides of Kabul
, killing four civilians and a police officer in some of the deadliest assaults near the Afghan capital in months, police said Tuesday.
Security forces also uncovered a cache of bombs inside the city of 4 million that militants are suspected of planning to use against international peacekeepers, police said.
It was not immediately clear if the two attacks were coordinated, but they underlined the security threat facing the tightly guarded capital, home to thousands of foreign aid workers, diplomats and others.
The police chief said extra security forces have been rushed to the area and have surrounded a run-down fort where the assailants were suspected to be hiding.
A coalition spokeswoman, American Sgt. Marina Evans, said she had no details on the attack.
The bombs discovered in Kabul were found in a junkyard for old military vehicles in the northern part of the city, said Interior Ministry spokesman Yousuf Stanekzai.