Pella and Verghina are two different places. Verghina (ancient Aegae) is where Andronikos found a tomb which he identified as that of Philip II, father of Alexander the Great. That is still disputed...probably most scholars accept it, but some argue that the tomb is later and is more likely the tomb of Philip Arrhidaeus, Alexander’s half-brother. Alexander, of course, was buried in Alexandria.
save the Tito propaganda.
I have actually been to the tomb.
The Credible Scholarship has never deviated. The discovery of the Tomb and the artifacts inside only made the slav claims even more ridiculous.
I suggest you go there, read the writings which are in Greek.
Alexander was never actually burried, his body was seen as a power prize and was lost and/or destroyed in the power vacume left in the collapse of the empire.