ONTARIO, Calif. (KABC) — A massive explosion was reported in Ontario on Tuesday afternoon, prompting a response from emergency personnel.
The incident occurred shortly after 12:30 p.m. in the area of South San Antonio Avenue and West Maple Street, shattering nearby windows and sending a large plume of smoke into the air.
“We are aware of the loud explosion that was heard recently,” a brief statement from the city’s official Twitter account said. “The Ontario Police Department and the Ontario Fire Department are investigating it. Please stay clear of the area.”
The cause of the explosion and any possible injuries were not immediately confirmed.
Residents as far away as Anaheim and Huntington Beach reported feeling reverberations from the explosion.
Ontario officials said explosions from the fireworks continued to be heard after the initial blast. A video on social media showed a fiery explosion followed by a large plume of smoke. One person was arrested as around 100 protesters marched through the city and set fire to the unoccupied Portland Police Association Building.