The family of a Kiwi man who went missing while swimming off the coast of Malaysia are mourning the "loving father" and grandfather.
Robert Mark Fagan, 63, was reported missing after a swim on April 30 near a yacht anchored one nautical mile off southern Johor state.
A search and rescue mission was launched but no sign of Fagan has been found.
In a statement, his family said they believed he had suffered a "medical event" while swimming.
"This loss is a shock to all and he will be deeply missed by his family and many friends both here and all over the world," they said in the statement, provided to Stuff.