Thane murdered in Welsh town (5)

I believe the answer is:

neath

I'm a little stuck... Click here to teach me more about this clue!

'welsh town' is the definition.
(I've seen this before)

'thane murdered' is the wordplay.
'thane' anagrams to 'NEATH'.
However, I am unsure how this is indicated.

'in' acts as a link.

Can you help me to learn more?

(Other definitions for neath that I've seen before include "Welsh rugby club" , "town in South Wales" , "Welsh industrial town" , "Town NE of Swansea" , "Under, poetically" .)

I've seen this clue in The Sun.

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