Frank Ocean’s father Calvin Cooksey has filed a defamation lawsuit against his son over a message posted on Ocean’s Tumblr page.

The Tumblr post was Ocean’s response to the deadly attack on Pulse nightclub, an Orlando LGBT venue where 49 people were killed, where he stated his father called a transgendered waitress a f***ot.

Ocean wrote: “I was 6 years old when I heard my dad call our transgender waitress a f***ot as he dragged me out of a neighbourhood diner saying we wouldn’t be served because she was dirty. That was the last afternoon I saw my father and the first time I heard that word, I think, although it wouldn’t shock me if it wasn’t.”

Cooksey claims the story is untrue and says it has “damaged his financial opportunities in film and music.

He is seeking $14.5 million USD in damages from his son.

According to TMZ, Cooksey also sued hip hop mogul Russell Simmons in 2014 for $142 million after claiming he was a deadbeat dad.