Ambulance staff take a man from outside a mosque in central Christchurch, New Zealand.

Armed police patrol outside a mosque in central Christchurch, New Zealand.

People wait outside a mosque in central Christchurch, New Zealand.

Police attempt to clear people from outside a mosque in central Christchurch, New Zealand.

People stand across the road from a mosque in central Christchurch, New Zealand.

Police stand outside a mosque in central Christchurch, New Zealand.

Police keep watch at a park across the road from a a mosque in central Christchurch, New Zealand.

Police talk to witnesses near a mosque in central Christchurch, New Zealand.