Fifteen people were injured, some of whom were in serious condition, on Saturday after a vehicle struck multiple pedestrians during a parade in rural Louisiana, US.

Axar.az reports, citing CNN, the driver of the vehicle is in custody, and the preliminary investigation determined the incident “does not appear to be an intentional act,” said Rebecca Melancon, the public information officer for the Iberia Parish Sheriff’s Office.

The driver, identified as a 57-year-old man from Jeanerette, showed signs of impairment, the state police said in a statement.

The Louisiana Lao New Year Festival said it is “profoundly saddened by the news of the incident near the festival grounds.” The festival started Friday evening in Broussard and New Iberia, Louisiana.