 Newspapers published testimony from witnesses who said that they had seen extraordinary solar activity, such as the Sun appearing to "dance" or zig-zag in the sky, careen towards the Earth, or emit multicolored light and radiant colors.According to these reports, the event lasted approximately ten minutes.The local bishop opened a canonical investigation of the event in November 1917, to review witness accounts and assess whether the alleged private revelation from Mary were compatible with Catholic theology.