PAUL MCCARTNEY was "extremely sad" for the death of his brother-in-law John Eastman

Paul McCartney took to Twitter this evening to declare the passing of brother by marriage John Eastman, and it wasn't some time before fans were reassuring the artist.

Paul said about John that he was  “one of the nicest and smartest people” he had ever known and added that he would be “sorely missed”.

John was the sibling of Paul's late spouse Linda McCartney, who passed on matured 56 in 1998.

PAUL MCCARTNEY wrote on twitter...

“My dear brother-in-law, John Eastman, has passed away. 

“Having known each other for over 50 years it is an extremely sad time for me, and our families.

“John was a great man. One of the nicest and smartest people I have had the good luck to have known in my life.”

Paul also said, “He will be sorely missed but always held dear in the hearts of those of us who knew and loved him.”