KABUL, Afghanistan (CNN) - Five police officers were killed when a mine exploded in western Afghanistan Tuesday night, a government official said.
Among the dead in the blast in Herat province was a police chief from the western part of the district, said Naqibullh Arwin, a spokesman for the governor of the province.
The officers' vehicle rolled over the mine while patrolling, the spokesman said. Police are investigating whether the mine was placed in the area recently.
Closer to Kabul, Afghan and NATO forces detained two Taliban commanders suspected of being involved in several roadside bombing attacks in Wardak province. They were picked up on Wednesday along with another suspected militant near the village of Bhardokheyl, according to NATO.
Two other Taliban commanders were detained on Wednesday along with several militants in Kandahar province in southern Afghanistan. One of the commanders "led a sizable miltant element," according to NATO. Both were blamed for recent attacks, including roadside bombings, in central and southern Kandahar province.
Attacks in southern Afghanistan killed three members of NATO's International Security Assistance Force on Tuesday, two from Britain and one from Estonia.
Britain's Ministry of Defence said the two soldiers from the 3rd Battalion, The Rifles, were on foot patrol with their Afghan counterparts when they were killed by a suicide bomber near Sangin, in Helmand Province. Two Afghan soldiers were also killed, according to the ministry.