Mass shooting at Christchurch mosque

There is a "serious and evolving" situation with an active shooter in Christchurch, New Zealand, police commissioner Mike Bush said. In a statement read on TV 3 New Zealand, police said one person was in custody. Police said there are a number of causalities but did not specify how many. CBS News partner Newshub affiliates Erin Speedy, Tova O'Brien, Thomas Mead report.