Eight people were injured on Saturday when a car drove into pedestrians in the centre of the northern Italian city of Modena, police and the city's mayor said.
Police said they arrested the driver, a man in his thirties, and there was no further danger.
Among the injured, four people are in a serious condition, the city mayor, Massimo Mezzetti, told broadcaster RaiNews24.
The driver is an Italian national born in Bergamo, of North African origin, and a resident of the Modena area, the mayor added.
"It seems (the driver) deliberately drove onto the sidewalk, hitting several people and crashing into a shop window. He then got out of his car and brandished a knife," said Mezzetti.
One man who tried to stop the driver suffered minor injuries, the mayor said.
A witness told RaiNews24 he heard people falling and threw himself to the ground as the car approached. He said the driver appeared to be under the influence of alcohol or drugs, though authorities have not confirmed this.
"I express my solidarity with those who were injured and their families," Prime Minister Giorgia Meloni posted on social media X
"What happened in Modena is extremely serious," Meloni added.
Trump says ISIS second-in-command killed by US and Nigerian forces
Tens of thousands march in London in separate protests
At least 8 dead, 32 injured in train collision that sparks bus fire in Thailand
Iraqi PM pledges to strengthen Arab, international relations
Hamas official says military chief has died after Israel says it targeted him
