Richard MacLean: Spokesperson for Wellington City Council addresses possible causes for Mount Victoria bus tunnel closure - Heather du Plessis-Allan Drive

What went on with the Mount Victoria bus tunnel closure overnight?

At first there were reports some of the tunnel roof came down on a bus. But it was more likely to be falling branches.

But the plot thickens. It's not obvious those branches are from pre-existing trees.

Richard MacLean, the spokesperson for the Wellington City Council, shares his thoughts on the matter.

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