It seems unlikely, but hey i have seen them in every corner of the Earth so why not Guatemala? I am planning to visit in August. Let me know if you are too, it would be good to meet someone familiar looking in a new place.
There is an Indian restuarant called "Sabor de la India" at the corner of 15 Avenida and 4 Calle, in Zone 1. It is next door to Vrisa Books and half a block from the post office. The owners are Sebastian and Dalia. Sebastian is from India. Dalia is Guatemalan. The food is great and I eat there whenever I can afford it, which is not often enough.