The local bishop opened a canonical investigation of the event in November 1917, to review witness accounts and assess whether the alleged private revelations from Mary were compatible with Catholic theology. The local priest conducting the investigation was particularly convinced by the concurring testimony of extraordinary solar phenomena from secular reporters, government officials, and other skeptics in attendance. Bishop José da Silva declared the miracle "worthy of belief" on 13 October 1930, permitting "officially the cult of Our Lady of Fatima" within the Catholic Church.