What happened to Matthew's zombies?

[xpastor]

In Matthew's account of the crucifixion he tells us that just as the moment of Jesus' death

At that moment the temple curtain was torn in two from top to bottom. The earth shook. The rocks split. Tombs broke open. The bodies of many holy people who had died were raised to life. They came out of the tombs. After Jesus was raised to life, they went into the holy city. There they appeared to many people. (27:51-53)

In all my reading during years, decades, as a Christian I have never seen anyone try to deal with this question, and to be truthful I never thought of searching for an answer.

So, what did happen according to believers?

Did these "zombies" die again?

If so, how long did they live before returning to the tomb?

Or did they get taken up bodily into heaven like Elijah and Jesus in the bible's three-decker universe?

Or what?