San Jose police officers have been deployed to the scene of a stabbing that resulted in two fatalities and a number of people being injured.
The police said in a tweet that "this is a very active scene" and urged people to avoid the area amid an ongoing operation.
The suspected attacker hasn't been arrested so far despite media reports suggesting otherwise.
No church services were being held at the time of the incident, the local police department said. Per law enforcement, homeless individuals had been brought into the church to "get them out of the cold".
San Jose Mayor Sam Liccardo initially tweeted the police had arrested the perpetrator. He, however, later deleted the tweet, saying that information on the status of the incident would be forthcoming from the San Jose Police Department.