Though the person in the video was masked, authorities assume it shows the suspected attacker, 21-year-old German citizen Abdul Ballout, a spokesperson for the federal prosecutors’ office said.
He would not specify when the video was recorded.
Ballout, who was shot dead by police on Sunday, is suspected of plowing a vehicle into crowds in Tiergarten park near the Brandenburg Gate late on Saturday, killing a Polish woman in her 60s and injuring 29 people.
Germany’s interior minister announced a security overhaul on Monday after the vehicle attack prompted an angry debate over why the suspected driver had been freed under supervision of a probation officer and was not in prison.
The suspect had been convicted and sentenced to jail time in May for preparing a serious act of violence endangering the state.
