The drama that played out on the streets of Donetsk Monday seemed sure to ratchet up tensions. A military unit of Russian nationals from the region of North Ossetia, in southern Russia, held the woman at a checkpoint in a roundabout in Donetsk known as “the Motel,” for a nearby hotel. The men, smiling and gesturing toward the woman, waved over cars for drivers to observe or take part.

Image Russia's foreign minister, Sergey V. Lavrov, at a news conference in Moscow on Monday. Credit... Maxim Zmeyev/Reuters

“We should hang you on the square,” one woman in the crowd yelled, then walked up and spat in the face of the victim, then kicked her in a thigh, causing the woman accused of spying to stagger back.

The gunmen looked on. At times, the pro-Russian soldiers posed beside the crying woman to take selfies on their smartphones, or playfully twirl her hair with their fingers.

At one point, a fighter walked a few paces back, crouched in the street and aimed a Kalashnikov rifle at the woman in a mock execution. The woman shut her eyes. “Open your eyes, stand up straight!” another of the gunmen yelled.

A call placed by The New York Times to an aide for a senior separatist commander informing him of the abuse resulted in the rebel soldiers at the checkpoint briefly detaining the journalists. The aide, who uses only the nickname The Georgian, sent a car with gunmen to extricate the suspected spy and journalists from the Motel.

The two groups of gunmen agreed to release the journalists, but were not able to agree on handing over the woman. After the discussion, the captors drove her away to an unknown location.