The Taliban killed at least 10 people including two NATO troops in a Kabul bombing on Thursday, another attack on the Afghan capital just as a US envoy returned to talks with the insurgents on a troop withdrawal.
The car bomb blast shook Shash Darak, a heavily fortified area adjacent to the Green Zone and home to several important complexes including the National Directorate of Security, the Afghan intelligence service, AFP reported.
Apparent surveillance footage of the attack, which occurred at about 10:10 a.m. (0540 GMT), showed a grey minivan explode just after it had cut in front of a line of white SUVs waiting to make a right turn onto a street.
One nearby pedestrian can be seen turning and trying to run away as the minivan crashed through a barrier just before the blast.
Resolute Support, the US-led NATO mission in Afghanistan, said a Romanian and an American service member had been killed in the explosion.
The American death brings to at least 16 the number of US military killed in action in Afghanistan this year, just as Washington is seeking a way out of its longest war.
According to Interior Ministry spokesman Nasrat Rahimi, at least 10 people were killed and 42 more wounded.
On Twitter, Taliban spokesman Zabihullah Mujahid claimed responsibility for the attack, saying a suicide bomber had triggered the car bomb and that "foreign invaders" were killed.
The attack was close to where a Daesh terror group's blast killed nine journalists in April last year.
It was the second time a Romanian national was killed by the Taliban this week. On Monday, a Romanian was among at least 16 people killed in a Taliban attack on a residential area in east Kabul.
The capital has been gripped by a surge in deadly violence even after the US and the militants reached an agreement "in principle" that would see the Pentagon pull thousands of troops from Afghanistan in return for various Taliban security promises.
But there is increasing unease about the deal, which Afghans fear will lead to a return of the Taliban to power.
On Thursday, the State Department said that the US negotiator Zalmay Khalilzad had returned to Qatar for further talks with the Taliban.
The deal still needs the approval of President Donald Trump, who has said that he wants to end American involvement launched after the September 11, 2001 attacks.
According to parts of the deal made public so far, the Pentagon would pull about 5,000 of its roughly 13,000 or so troops from five bases across Afghanistan by early next year.
The insurgents in turn will renounce Al-Qaeda, promise to fight Daesh and stop terrorists using Afghanistan as a safe haven.
The Afghan government has expressed doubts about the prospective deal, saying officials need more information about the risks it poses.
"There is too much concern about it, and we are still not assured of what consequences this agreement could have for Afghanistan's future," presidential advisor Waheed Omar said Thursday.
"The people of Afghanistan have been bitten by the snake before, and have been witness to the consequences of hasty deals".
Afghan President Ashraf Ghani condemned the Taliban for "celebrating the deaths of innocent lives" after Thursday's attack.