Anyone with a clue of where Arsareth is located? Is it in Africa? or elsewhere?

2nd Esdras 13 gives an account of how the 10 tribes of Israel[Northern Kingdom] were exiled into Arsareth from the Assyrian captivity.

2 Esdras 13:39-50

39 And whereas thou sawest that he gathered another peaceable multitude unto him;

40 Those are the ten tribes, which were carried away prisoners out of their own land in the time of Osea the king, whom Salmanasar the king of Assyria led away captive, and he carried them over the waters, and so came they into another land.

41 But they took this counsel among themselves, that they would leave the multitude of the heathen, and go forth into a further country, where never mankind dwelt,

42 That they might there keep their statutes, which they never kept in their own land.

43 And they entered into Euphrates by the narrow places of the river.

44 For the most High then shewed signs for them, and held still the flood, till they were passed over.

45 For through that country there was a great way to go, namely, of a year and a half: and the same region is called Arsareth.

46 Then dwelt they there until the latter time; and now when they shall begin to come,

47 The Highest shall stay the springs of the stream again, that they may go through: therefore sawest thou the multitude with peace.

48 But those that be left behind of thy people are they that are found within my borders.

49 Now when he destroyeth the multitude of the nations that are gathered together, he shall defend his people that remain.

50 And then shall he shew them great wonders.

They are lost forever.