DAMASCUS — Syrian authorities arrested former intelligence officer Amjad Yousef in the central province of Hama in connection with the Tadamon massacre. Yousef had been hiding in the province, and authorities posted a photo of him in a striped prison uniform.

The Interior Ministry said authorities will pursue all individuals involved in the Tadamon shooting to bring them to justice. Earlier in 2025, Syrian security forces arrested three other people involved in the same killings.

The arrest follows the ouster of former President Bashar Assad by insurgents in December 2024. Assad fled to Russia, and since December 2024, dozens of members of Syrian security agencies blamed for atrocities during the conflict have been arrested.

The Tadamon killings became public after a video leaked in 2022. The 6-minute-and-43-second clip showed members of Syria's Military Intelligence Branch 227 with around 40 prisoners in an abandoned building in Tadamon, a suburb of Damascus near the Yarmouk refugee camp.

In the footage, members of Branch 227 stood blindfolded, bound prisoners at the edge of a trench filled with old tires, pushed or kicked them into the trench, and shot them as they fell. The gunmen later set the bodies on fire. The agents told some prisoners they were going to pass through a sniper's alley and instructed them to run. The men tumbled onto the bodies of those killed earlier in the trench. As bodies piled up, some still moved, and the gunmen shot into the pile.

For much of the war, Tadamon was a front line between government forces and opposition fighters. The conflict began with anti-government protests in March 2011 and later turned into a civil war that has left approximately 500,000 people dead and over 1 million wounded.

In March 2023, the U.S. State Department banned entry into the U.S. for Yousef, his wife, and immediate family members.