Richard's sad passing comes after it was revealed that he had been sent to hospital last month after suffering a "life threatening condition", although details of the illness were not given.
He continued, writing: 'He's now with his Mom and Sister.
A representative for Swift said he died on Tuesday morning in Tacoma, Washington.More news: President Trump orders US flags to half-staff to honor slain journalists
U.S. rock band The Black Keys have paid tribute to Swift, who was their former touring bassist. "Today the world lost of the most talented musicians I know".More news: Former Malaysian PM Najib arrested
He also released multiple solo albums and EP's.
At that time, a GoFundMe was created to help Swift with medical expenses.
A California native born on March 16, 1977, Swift made a handful of solo records in the 2000s and produced albums for such acts as Gardens & Villa, Sylvie Lewis, Damien Jurado and later Guster.More news: Oprah Winfrey Dishes on Prince Harry, Meghan Markle's Royal Wedding
He was a mainstay on the national touring roster, supporting bands like The Black Keys, Wilco and The Shins onstage, while maintaining an OR presence at his Cottage Grove recording studio, National Freedom. "We are so grateful you have extended so much generosity and love to our beloved Swift", the update read.