BUCHA, Ukraine — It is the last time the men would be seen alive: In two videos, Russian paratroopers march them at gunpoint along a street in Bucha, a suburb of Kyiv. Some of the Ukrainian captives are hunched over, holding the belts of those in front of them. Others have their hands over their heads. “Walk to the right, bitch,” one of the soldiers orders them.

The videos, filmed on March 4 by a security camera and a witness in a nearby house and obtained by The New York Times, are the clearest evidence yet that the men were in the custody of Russian troops minutes before being executed.

“Hostages are lying there, against the fence,” the person filming one of the videos says. He counts: “One, two, three, for sure, four, five, six …” In total, nine people are being held.

The men are forced to the ground, including one wearing a distinctive bright blue hooded sweatshirt.

The video ends. But eight witnesses recounted to The Times what happened next. Soldiers took the men behind a nearby office building that the Russians had taken over and turned into a makeshift base. There were gunshots. The captives didn’t return.

A drone video filmed a day later on March 5, also obtained by The Times, is the first visual evidence that confirms the eyewitness accounts. It showed the dead bodies lying on the ground by the side of the office building at 144 Yablunska Street as two Russian soldiers stood guard beside them. Among the bodies, a flash of bright blue was visible — the captive in the blue sweatshirt.

A photograph of the executed men’s bodies lying in a courtyard, some with their hands bound, was among a range of images that received global attention in early April after Russian forces withdrew from Bucha. Russian leaders at the highest levels in Bucha and described the images as a “provocation and fake.”

But a weekslong investigation by The Times provides new evidence — including the three videos — that Russian paratroopers rounded up and intentionally executed the men photographed in the courtyard, directly implicating these forces in a likely war crime. Russia’s foreign affairs and defense ministries did not respond to requests for comment on The Times’s findings.

Read our full investigation in the New York Times.