GARDEZ, Afghanistan, July 14 (Xinhua) -- Two suicide bombers were killed and three passersby wounded after the assailants chased by police detonated their explosives in Afghanistan's eastern city of Gardez on Friday, a security source said.
"Police personnel identified two suicide bombers riding a motorcycle along Kabul-Gardez roadway in outskirts of Gardez at midday. The assailants did not heed the police warning. They tried to escape the security post and detonated their explosive as police was chasing them," the source told Xinhua anonymously.
The injured were shifted to a nearby hospital in the city, which is the capital of eastern Paktia province, some 100 km south of Kabul.
The potential target of the attackers was not immediately known.
Local authorities have launched an investigation into the incident.
The attack came as the war-weary Afghans have been witnessing a surge in attacks by Taliban fighters and Islamic State (IS) affiliates across the country recently.
Taliban militants have been on the rampage since late April when they launched a so-called annual rebel offensive in different places in Afghanistan, including Kabul, killing and injuring hundreds.
On June 18, six policemen were killed and 25 people injured after armed Taliban set off a car bomb and attacked a police station in Gardez.