The
Uncovering of the Relics of Saint Alexis, Metropolitan of Moscow and All Rus.
Before his blessed repose in 1378 Saint Alexis, Metropolitan of Moscow, left
instructions to place his body in the Chudov (Miracle of the Archangel Michael)
monastery in the Kremlin. He designated a burial place outside the altar of the
church, since in his humility he did not want to be buried in the temple. But
the pious Great Prince Demetrius Ivanovich Donskoy (1363-1389), greatly
esteeming the holy hierarch, gave orders to place the body of Metropolitan
Alexis inside the church, near the altar.

In 1485,
the relics of the saint were transferred into a church dedicated to him. At
present, they rest at the Patriarchal Theophany cathedral in Moscow. The Life
of Saint Alexis is found under February 12.
Source:
https://oca.org/saints/lives/2013/05/20/101449-uncovering-of-the-relics-of-st-alexis-the-metropolitan-of-moscow
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