Surveillance video of a nearly blind refugee from Myanmar being dropped off at a Buffalo doughnut shop by Border Patrol agents five nights before he was found dead shows him pacing by a locked door and walking through an empty parking lot.

Police in New York state are investigating how a nearly blind refugee from Myanmar died after U.S. Border Patrol agents dropped him off at a doughnut shop in Buffalo.

The nation’s biggest city will pick its next mayor on Tuesday in an election that has sparked debate over the future of the Democratic Party.