"We remain committed to supporting the Afghan people and their government," Price stated. "We also call on the Taliban to pursue a pathway of peace instead of continuing a military campaign responsible for the senseless deaths of Afghan civilians."
On Tuesday, a suicide bomber detonated a vehicle and gunmen then who stormed the attacked site killing at least 28 people and wounding more than 300 others, according to media reports from the scene.
The Taliban later took credit for the attack.
The United Nations estimates that terrorists killed more than 3,500 civilians in 2015, while wounding more than 7,000.