United Kingdom, May 11 -- Martin Short has lived through a "nightmare" few months following the death of his daughter Katherine.

The Only Murders In The Building star - who lost his wife Nancy in 2010 after a battle with ovarian cancer - was left devastated when Katherine took her own life in February at the age of 42 and he's now reflected on his grief for the first time in an interview with CBS News Sunday Morning.

Martin said: "It's been a nightmare for the family. But the understanding [is] that mental health and cancer, like my wife's, are both diseases, and sometimes with diseases they are terminal.

"And my daughter fought for a long time with extreme mental health, borderline personality disorder, other things, and did the best ...