Police in Doncaster are appealing for help to locate missing 82-year-old Colin Smith.
Mr Smith was last seen at around 8.40pm yesterday at his home address in the Thorne area.
This morning, it has been discovered that Colin was no longer at home and he was reported missing to police.
He is described as being of slim build, around 5ft 10ins tall, with short grey hair and possibly a slight beard. It is not known what he is wearing.
Anyone with any information is asked to contact South Yorkshire Police on 101.