Four Afghan police officers have been killed after a road side bomb planted by a group of Taliban militants targeted their vehicle in Afghanistan's southern Zabul province.
"The attack took place late Wednesday," Mohammad Jan Rasoulyar, provincial spokesman, said, Press TV reported.
In a related development, a police officer was killed and another was injured in the northern province of Takhar on Thursday, when armed militants stormed a border police post.
The ensuing clash lasted for two hours, district chief Mullah Omar told AFP. "The militants took another policeman with them," he added.
Roadside bombs, or Improvised Explosive Devices are by far the most lethal weapons Taliban militants use against Afghan forces, foreign troops as well as civilians.
Ill-equipped and under-trained Afghan army soldiers have largely fallen victim to the climbing Taliban attacks in both urban and rural parts of the country.
Taliban have concentrated their nine-year fight against the US-led forces in Afghanistan's southern provinces of Helmand and Kandahar.