Two bomb explosions and an insurgent attack killed two NATO service members and a local Afghan government official on Wednesday in different parts of Afghanistan, authorities said.
The deaths come one day after Taliban suicide bombers killed at least 19 people across the country as they stepped up their fight against Afghan forces slowly taking the lead from U.S. and international troops.
NATO said both coalition service members were killed in the south _ one in a roadside bombing and the other during an insurgent attack.
The coalition did not provide their nationalities nor disclose other details.
So far this year, 103 members of the U.S.-led coalition have been killed in Afghanistan.
Sarhadi Zewak, a spokesman for Laghman province in the east, said the head of Dawlat Shahi district was also killed on Wednesday when his motorcycle hit a roadside bomb.
He was on his way to his office along with a school headmaster who was injured in the explosion, Zewak said.
Separately, the office of the governor of the southern Helmand province said three local Afghan policemen were killed in Musa Qala district on Tuesday when a suicide bomber on a motorcycle blew himself up near their vehicle.
The deaths bring the death toll from Tuesday's wave of bombings to 19.
The three were responding to an earlier bombing that killed four policemen at the district police headquarters building. Three suicide attackers wearing vests laden with explosives parked their car outside the police building and walked toward the entrance, said Daud Ahmadi, a provincial spokesman. Ahmadi said police killed one attacker and the other two blew themselves up inside the compound.
However, an Associated Press photographer at the scene Tuesday saw two suicide attackers who were fatally shot and the remains of a third who had blown himself up.
The first and deadliest of Tuesday's attacks took place in Herat, a relatively peaceful province whose capital and many districts are already under Afghan security control.
A sport utility vehicle packed with explosives blew up outside the gate of the Guzara district police office. The remains of two men and a woman wearing a burqa were found inside the vehicle, officials said. Three security officers and nine civilians were killed, and more than 50 people, including children, were wounded.