Police describe California shooting 'carnage'

Police in California have described the aftermath of Wednesday's shooting at a social services centre, which left 14 people dead.

The husband and wife behind the attack, Syed Rizwan Farook and Tashfeen Malik, had an arsenal of weaponry in their home.

Lt Mike Madden from San Bernardino Police was one of the first responders on the scene and described it as "carnage".