Police are attending the scene of a shooting with multiple casualties in Monterey Park, California, according to the Los Angeles Times.

The number of casualties, exact location and time of the alleged shooting have not yet been confirmed by Monterey Park Police Department.

Journalist Christina Pascucci wrote on Twitter that the police department had confirmed to her that a “mass shooting occurred.” Newsweek has contacted Monterey Park PD for comment.

Footage posted to social media appeared to show one person being loaded onto an ambulance on a stretcher. Another video widely circulating on Twitter showed several law enforcement vehicles gathered at the scene.

The incident occurred just after 10.30pm local time on Saturday evening, according to news agency BNO News.

Monterey Park had celebrated Chinese Lunar New Year that evening, with the city east of Los Angeles marking the occasion across the weekend. Events began at 10am local time on Saturday, and were scheduled to finish for the day at 9pm. A second day of celebrations on Sunday had been planned from 10am until 7pm at Garvey Avenue.

The city’s previous Lunar New Year events attracted more than 100,000 visitors each day, the city’s official page said.

This is a developing story and will be updated as more information becomes available.

Police Attend Reported Shooting in California
Crime scene tape. Police have reportedly responded to a mass shooting in Monterey Park, California.
Mark Wilson/Getty Images