`Ghostbusters` co-stars Dan Aykroyd, Bill Murray pay tribute to Harold Ramis

London: Dan Aykroyd and Bill Murray have paid their tributes to their co-writer and actor Harold Ramis who recently passed away at the age of 69.Aykroyd took to Twitter saying that he was deeply saddened to hear of the passing of his brilliant, gifted, funny friend, co-writer/performer and teacher, the BBC reported.

The 61-year-old Canadian comedian added that he prays for the ` Ghostbusters` star to get the answers he was always seeking. Murray said that the late actor had earned his keep on this planet. It was earlier reported that Ramis died of autoimmune inflammatory vasculitis, a rare disease that involves swelling of the blood vessels.