Ian Jones, aged 43 was last seen around 3.45pm this afternoon (1 February) in the Barn Fold area of Waterlooville.
He is believed to be wearing a green jacket and is thought to have his pushbike with him.
Officers from Hampshire Constabulary are growing increasingly concerned for his welfare and are urging anyone with information to get in touch.
If you have any information, please contact police on 101, quoting reference number 44190039293.
In an emergency, call 999.
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