AT LEAST 10 people from two families, including children, are believed to have been killed in Sunday’s US drone strike, which Washington insisted was targeting terrorist gangs in Afghanistan planning an attack on Kabul airport.

The youngest of the children blown to pieces in the attack was two-year-old Sumaya, the oldest 12-year-old Farzad. They were travelling in a car that was hit by the missile.

It is thought that the Ahmadi and Nejrabi families had visas enabling them to travel to the United States and were preparing to leave for the airport.

Neighbours described finding a “horror scene,” where little girls and boys had been playing just minutes before the missile struck.

They told Al Jazeera that they saw “human flesh stuck to the walls, bones fallen into the bushes, walls stained red with blood, shattered glass everywhere.”

Talking about Farzad, a neighbour said: “We only found his legs.”

The drone strike was authorised by United States President Joe Biden, who said that his military commanders had told him a second attack on the airport was “highly likely” in the next 24 to 36 hours.

More than 170 Afghan civilians and 13 US military personnel were killed in a suicide bomb attack at the airport on Thursday, which has been attributed to Isis.

US central command spokesman Captain Bill Urban said: “We are aware of reports of civilian casualties following our strike on a vehicle in Kabul.

“It is still unclear what may have happened,” he said, adding that investigations were under way.

Five rockets were fired at Kabul’s international airport early this morning in what appeared to be a retaliation for the drone strikes.

US officials said that they were intercepted by the C-Ram missile defence system before they could hit their target.

Afghan journalist Emran Feroz said: “It’s very symbolic that US operations in Afghanistan started with drone strikes and ended with drone strikes. It seems they’ve learned nothing in 20 years.”