I used to work with a Pakistani who's niece, brothers, uncles and assorted cousins had red hair ( not mixed race)
That may be due to a genetic condition called leucism.
There are different forms of it and it causes some genes for colouring to 'misfire'.
Some leucisitics look like albinos but have coloured eyes (not pink), some look 'piebald', like they have vitiligo (but the patches don't grow bigger) and some have an all over lighter colouring than the rest of their family.
In Asian people, it can cause red hair, although there have been noted examples of red haired people in Asia.
en.m.wikipedia.org/wiki/Red_hair