Pope Francis was buried in a simple tomb in Basilica Santa Maria-Maggozhore Roman.

It was reported by the Vatican News related to the Pope's evidence.
I asked my tomb to be prepared in a funeral cavity in the aisle between the Pailins chapel and Capella of Basilica Sforza, as shown in the attached plan. The tomb should be on the ground, simple, without special jewelry, with the only words: Francis, Francis's will.
Francis went on April 21, a day after Easter. The pope is 88 years old. Recently, the Pope has experienced health problems.
The Vatican revealed the cause of the Pope's death
On the eve of Francis, he resolved traditional resurrection speech for believers, in which he called on the nation to disarming for the purpose of achieving peace on Earth. In addition, on April 20, the Pope met with the US Vice President Jay Di Wans in the Vatican.
Earlier, Putin appreciated the attitude of Pope Francis towards Russia.