The police convoy was caught in a firefight in the remote province of Badakhshan on Wednesday when officers were returning from an anti-insurgent operation.
The attack will heighten concern that Afghan forces cannot provide security across the country, where a US-led invasion ousted the hardline Taliban regime in 2001.
"The acting interior minister is deeply saddened about the killing of 18 policemen and wounding of 13 others in a terrorist attack in Warduj district of Badakhshan," a statement from the interior ministry said.
The mountainous northeast of Afghanistan is far from the Taliban heartlands of the south and is relatively peaceful.
But Taliban militants killed 17 captured Afghan soldiers in the same district in March. The men were taken hostage while guarding a convoy.
Afghanistan's 350,000-strong security forces are suffering a steep rise in casualties as the NATO combat mission winds down and Afghan authorities try to impose stability ahead of the presidential election due in April.
The Afghan government declines to release exact figures, but the US department of defence has said that about 400 Afghan police officers and soldiers are killed every month in action.
When the 87,000-strong international military coalition fighting alongside Afghan forces withdraws by the end of next year, the ability of local troops to control the insurgents is seen as key to the country's stability.
The interior ministry said 47 insurgents were killed and 20 others were wounded in recent efforts to clean Warduj district of militants.
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
