Mass murderer Charles Manson has been given a license to marry a 26-year-old woman who visits him in prison.

The Associated Press is reporting that 80-year-old Manson is to marry Afton Elaine Burton, who left her Midwestern home nine years ago and moved to California to be near Manson.

She maintains several websites advocating for Manson's innocence.

The license does not specify a wedding date and indicates the couple has 90 days to get married or they will have to reapply.

Manson, along with 3 women, were convicted in the gruesome killings of actress Sharon Tate and four others in 1969, and grocers Leno and Rosemary LaBianca who were killed the following night.