A spokesperson for Sussex Police said: “We are urgently seeking to locate Martin who is missing from Eastbourne.
"He was last seen in the town about about 2pm on Tuesday, January 13.
"His clothing and last known location are not known at this stage.
"Officers are concerned for his welfare.
"Anyone who sees Martin or knows his whereabouts is asked to call 999 and quote serial 1285 of 13/01.”