Diocletian ordered the destruction of the new church in Nicomedia, the destruction of its writings and the confiscation of its goods. In the months that followed, other churches were destroyed and priests imprisoned.
It is unlikely that Constantine played any role in this persecution. In his later writings, he tried to portray himself as an opponent of Diocletian's "bloody edicts" against "God's followers." However, there is no indication that he successfully opposed them.