NIAGARA FALLS, New York 鈥� A vehicle exploded at a checkpoint on the American side of a US-Canada bridge in Niagara Falls Wednesday, leaving two people dead and prompting the closing of four border crossings in the area, authorities said.
There was no immediate information on the cause of the explosion, but it raised concerns on both sides of the border.
Canadian Prime Minister Justin Trudeau said officials were 鈥渢aking this extraordinarily seriously,鈥� and the White House said President Joe Biden was 鈥渃losely following developments.鈥�
The two deceased people were in the vehicle, a law enforcement official told The Associated Press. The official was not authorized to discuss details of the investigation publicly and spoke on condition of anonymity.
鈥淭his is obviously a very serious situation in Niagara Falls,鈥� Trudeau said in Parliament before excusing himself from Question Period in the House of Commons to be briefed further.聽
鈥楤all of fire鈥�
The US FBI鈥檚 field office in Buffalo was investigating the blast, along with other agencies. New York Gov. Kathy Hochul was traveling to Buffalo from the state capital, Albany.
The blast happened on the US side of the Rainbow Bridge, which connects the two countries across the Niagara River.
Photos and video taken by bystanders and posted on social media showed thick smoke, flames on the pavement, and a security booth that had been singed. Videos showed that the fire was in a US Customs and Border Protection area just east of the main vehicle checkpoint. The agency had no immediate comment.
Speaking to聽WGRZ-TV, witness Mike Guenther said he saw a vehicle speeding toward the crossing from the US side when it swerved to avoid another car, crashed into a fence, and exploded.
鈥淎ll of a sudden, he went up in the air and then it was a ball of fire like 30 or 40 feet high,鈥� Guenther told the station. 鈥淚 never saw anything like it.鈥�
The Niagara Falls Bridge Commission called the incident 鈥渁 serious car crash.鈥�
搁贰础顿:听Population of hard-to-eradicate 鈥榮uper pigs鈥� in Canada threatening to invade US
搁贰础顿:听Canada PM Trudeau condemns violence after shots fired at Jewish schools
Other bridges closed as a precaution
The bridge and three others between western New York and Ontario were quickly closed as a precaution, and the Buffalo-Niagara International Airport began security checks on all cars and told passengers to expect additional screenings.
Trudeau said 鈥渁dditional measures鈥� were being contemplated and activated at border crossings across Canada. And in Toronto, about 100 miles (about 160 kilometers) away, police said they were increasing patrols as a precaution.
From inside Niagara Falls State Park, Melissa Raffalow said she saw 鈥渁 huge plume of black smoke鈥� rise up over the border crossing, roughly 50 yards (45 meters) away from the popular tourist destination. Raffalow told AP in a message that police arrived soon after, urging visitors to disperse as they began cordoning off the street.
Raghu Bhattarai said by phone that he was inside his restaurant, the Niagara Tandoori Hut, near the bridge when he heard a sound he described as a 鈥渂oom.鈥� A few minutes later, he saw black smoke rising.
The Niagara Falls Bridge Commission reported that all four of its crossings 鈥� the others are Lewiston, Whirlpool, and Peace Bridge 鈥� were closed.
About 6,000 vehicles cross the Rainbow Bridge each day, according to the U.S. Federal Highway Administration鈥檚 National Bridge Inventory. About 5% is truck traffic, according to the federal data.
The bridge, constructed in 1941, is just over 1,440 feet (439 meters) long and has a main span constructed of steel, according to the data.