Obama vowed that investigators would 'get to the bottom' of how and why the rampage occurred

Dozens of journalists flooded into the home, rifling through children's toys and family photos for clues

Twenty-one people were wounded in the shooting, ranks as the deadliest instance of US gun violence in three years

Police say Farook, Malik killed 14 people in a shootout in Southern California

Across the country, Muslim Americans responded with shock and outrage after California shooting

CAIR says Malik is believed to be from Pakistan and had lived in Saudi Arabia before coming to the United States

FBI says they have not ruled out terrorism

Syed Farook, a US citizen, is believed to have been killed in a shootout with police

Shooting triggered a massive manhunt that ended hours later with police shooting dead two suspects, a man and a woman

Assailants had opened indiscriminate fire at their concert in Paris