“One day, I hope we can play football together in the sky,” 80-year-old Pele wrote in Portuguese on Twitter.
President Alberto Fernandez has announced three days of national mourning in the South American country.
Shortly before the announcement that shocked a nation, Argentine media reported Maradona had suffered a serious health setback on Wednesday and was being treated by doctors at his home north of Buenos Aires.
“There are four ambulances at the door of the residence. They have summoned family members to come. It is serious,” GidiTrendz gathered.