A man with a clipboard posed as a Child Youth and Family employee and asked an Invercargill man about his children over the weekend, police say.

Police are seeking information about the man who was seen on Tweed St on Sunday.

He carried a clipboard and approached a man at his house about midday. The purported CYF worker spoke with him about the man's children.

The man was described as thin in build, about 1.82m tall, non-European with black, spiky hair.

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Anyone who may have been approached by the man or had seen someone fitting his description was asked to contact Invercargill police.