Washington: US President Donald Trump says he has called off a secret Camp David meeting with Taliban and Afghanistan leaders after a car bomb attack in Kabul.

Trump tweeted on Saturday, Washington time, that a meeting scheduled for Sunday had been cancelled because of a Taliban attack in the Afghan capital on Thursday that killed 11 people, including a US soldier.

An injured man is carried into a hospital after a car bomb explosion in Kabul.Credit:AP

The President tweeted that he “called off peace negotiations” and demanded to know who “would kill so many in order to seemingly strengthen their bargaining position” in the negotiations.

He added that if the Taliban could not hold to a ceasefire during the negotiations, “they probably don’t have the power” to negotiate a peace deal.