At least four are dead, 15 are injured and hundreds of others were sent scrambling for safety Sunday after at least one gunman opened fire in Christmas Hill Park during the last day of the Gilroy Garlic Festival, in the US state of California, according to officials, CBS San Francisco reported.

A suspected gunman is dead.

Police say there may be a second suspect connected to the shooting, but it was still unclear.

US President Donald Trump has commented on this incident.

“Law Enforcement is at the scene of shootings in Gilroy, California.” He wrote on Twitter. “Be careful and safe!”