(CNN) -- Two British soldiers were killed and another soldier and an interpreter were wounded in a bomb blast Wednesday in the Helmand province of Afghanistan, Britain's Defense Ministry said.
The bomb went off as the troops were on patrol.
Also on Wednesday, Afghan police and coalition troops battled Taliban militants in southern Afghanistan and killed more than two dozen of the insurgents, the U.S.-led coalition said.
The fighting occurred more than 10 miles northwest of the Sangin District Center in Helmand province when militants ambushed Afghan National Auxiliary Police officers and coalition advisers on a combat patrol, the coalition said.
The fighting started when a "squad-size element of extremist Taliban" ambushed "the patrol with small-arms, machine gun and rocket-propelled grenade fire from several buildings within the village limits," the coalition said.
The security forces returned fire and the militants "reinforced their positions with additional fighters and also started firing from an extensive trench line located throughout the village," it said.
Coalition aircraft were called in and pounded "positively identified enemy positions using precision guided munitions."
Along with the Taliban deaths, a non-combatant was injured "by enemy fire as he attempted to flee the village prior to the engagement," the coalition said.