Police in San Bernardino, California, are now reporting that "upwards of 14 people have been killed and upwards of 14 people have been injured."
San Bernardino Police responded to an active shooter situation at Inland Regional Center just after 11:am (PST).
Authorities have said that one to three suspects may have been involved in the active shooter situation.
Police have said that the information that has been provided is all preliminary and is subject to change.
The building is home to a facility that provides aid and services to mentally ill individuals.
More details when they become available.