Earlier this year, the 72-year-old Magaldi told officials in the diocese he was HIV positive.
Magaldi was removed from active ministries in 1999 following allegations of sexual misconduct in Texas and Rhode Island. The church considered those allegations credible, and Magaldi was removed from clerical status in 2006.
In a statement, officials in the Fort Worth diocese said they will "pray for the repose of his soul."
Magaldi will be cremated and buried with his parents in Florida.
Slideshow archive | ABC13 wireless | Headlines at a glance