San Jose Mayor Sam Liccardo said two people died from their injuries, KRON4 reported.
The suspect has been arrested.
San Jose police responded to Grace Baptist Church at 484 E San Fernando St. around 8:45 p.m. following reports of a possible stabbing.
Police confirmed via Twitter that multiple people have been stabbed and some are suffering from life-threatening injuries.
No additional information is available at this time.
ZZ/PR