Serious concerns for a non-verbal Invercargill man -- who's been missing more than 48 hours

Raymond Horn's been missing from his central city home since Monday morning.

The 68-year old walks with a shuffle and is thought to be wearing a light-coloured polo shirt, a black and red jacket, gym shoes and sweatpants or jeans.

Police are asking people to search their houses -- as it's believed he might've wandered on to a property.

Anyone with information should call police on 10-5.