Authorities are officially investigating the San Bernardino, California, massacre as “an act of terrorism,” said FBI official David Bowdich.
Investigators have discovered some phone connections between at least one of the San Bernardino shooters and others being investigated by federal officials, Bowdich said. He added that a number of pieces of evidence pushed authorities to launch a terrorism investigation.
Get complete coverage of breaking news on CNN TV, CNN.com and CNN Mobile.
Watch CNN live or On Demand from your computer or mobile device.
Watch live CNN news coverage now at http://cnn.it/go