The Rainbow Bridge connecting the US and Canada near Niagara Falls remains closed for a second day following a deadly car explosion.
The Wednesday morning incident triggered a major security scare on the eve of Thanksgiving.
A husband driving the car and his wife were killed, and a US border agent was injured.
New York’s governor ruled out terrorism, but many unknowns remain, including the identity of the couple.
The explosion happened at around 11:30 local time (16:30 GMT) on Wednesday, causing serious disruption on one of the busiest travel days of the year ahead of American Thanksgiving.
New York Governor Kathy Hochul said the car travelled at a “very high rate of speed”, hurling over an 8ft (2.4m) fence on the New York side of the border near a checkpoint.
The vehicle had been “incinerated”, Ms Hochul said, and nothing was left but the engine. Not even a registration plate was recovered.
US law enforcement confirmed that the two people inside the car were a married couple. But it remains unclear who they were and why they had crashed.
CNN reported that the motorist was driving a 2022 Bentley and had just been to a US casino, after a concert by hard rock band Kiss that he was initially going to attend in Canada had been cancelled.
Ms Hochul described one of the people who died as a “local” from the western New York Region.
Source: bbc.com