A bomb exploded Friday at an outdoor mosque in northwest Afghanistan, killing four worshippers, police said.
Fourteen other people praying at the mosque were wounded in the explosion in Almar district of Faryab province, said Lal Mohammad Ahmadzai, a spokesman for the Afghan National Police in northern Afghanistan. He said the bomb was planted on a motorbike parked in a yard of the mosque.
In the city of Herat in western Afghanistan, a bomb placed on a small cart exploded on Friday, killing an Afghan woman and wounding seven other civilians, said Sayad Agha Saqeb, police chief in Herat province. The bomb exploded about 500 meters from the entrance to the police headquarters, he said.
No one claimed responsibility for the blast, but insurgents have stepped up their attacks against government officials and others affiliated with the Afghan government and the U.S.-led coalition.
Separately, NATO reported Friday that a coalition service member was killed in an insurgent attack, raising to four the number of foreign troops killed in Afghanistan on Thursday. The U.S.-led coalition said the three other troopers were killed in two separate roadside bomb explosions.
The coalition did not disclose any other details about the deaths.
So far this year, 397 international troops have died in Afghanistan, including at least 295 Americans.
The coalition also said it was investigating reports that NATO caused civilian casualties in Baraki Barak district of Logar province, south of Kabul.