Two people were killed and their daughter was wounded in what Russia says was an attack by Ukraine on the Crimean bridge.
The 12-mile road and rail bridge, which connects Russia to the Crimean Peninsula that Moscow annexed illegally from Ukraine in 2014, has been a key artery for Russian troops fighting in Ukraine and was personally opened by Vladimir Putin as point of national pride.
Explosions were heard before dawn, Reuters reports. Traffic has been halted on the bridge, and unverified photos on social media show a large section of the road split off from the rest of the bridge and hanging to one side close to the water. Ukrainian authorities have not made any official comment.
Meanwhile, Russia's withdrawal from a critically important wartime deal that allowed the export of Ukrainian grain across the Black Sea has reignited fears about global food security. Wheat, corn and soybean prices all rose on the news.