A man has spit on another customer in an altercation over face masks at Thornleigh Bunnings.

NSW Police Deputy Commissioner Mal Lanyon confirmed to Jim Wilson a man is being interviewed at Hornsby police station, assisting officers in their enquiries.

“That is a disgraceful act, and we’re asking for people to show some humanity.

“If someone is asking you to put a mask on, it’s because they’re caring about your health and the health of others.

“There was nothing threatening in the male’s action.”

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Image: Getty