Yikes. The relationship between Graham Nash and David Crosby has always been fractious, to say the least - but it seems that Nash has delivered a deciding blow with his latest comments on his sometime bandmate.

The pair, who were joined by Stephen Stills (and in the past, Neil Young) in Crosby, Stills, Nash & Young, toured together as recently as last year - including a date at Dublin's Bord Gáis Energy Theatre last September.

However, in a new interview with Dutch magazine Lust for Life, Nash said that Crosby had been 'awful' to him in recent times and has been sending him 'nasty emails'.

"I don’t like David Crosby right now," he said. "He’s been awful for me the last two years, just fucking awful. I’ve been there and saved his fucking ass for 45 years, and he treated me like shit. You can’t do that to me. You can do it for a day or so, until I think you’re going to come around. When it goes on longer, and I keep getting nasty emails from him, I’m done."

He added: "Fuck you. David has ripped the heart out of Crosby, Stills, Nash & Young... How can I not be sad? Look at the music we probably lost. How can I not be sad about that? The truth is, after being totally immersed in me and David and Stephen and Neil’s music, I’m done. I’ve had 10 years of it. Leave me the fuck alone. I need to concentrate on me now."

As NME report, Crosby also called actress Daryl Hannah - the partner of Neil Young - a "purely poisonous predator" in 2015, comments which he later apologised for.

There hasn't been a CSNY album since 1999, and it looks like we won't see another one at this point...