Tales of St Issa have floated around Northern India among Hindus and Muslims for about 2,000 years. Some Muslims near Kashmir have been maintaining a tomb for about as long, and they claim to be the final resting place of St Issa. In that version of the story, He came back to India after the crucifixion and died there many tears later. This BBC article covers some information about the tomb.
news.bbc.co.uk/2/hi/programmes/from_our_own_correspondent/8587838.stm
Again, this is mostly local tradition, but it is intriguing. The idea of Jesus being in India from age 12 to 30 (sometimes quoted as 26) is feasible, but not proven. However, heavy strains of Upanishadic thought can be found in His teachings, but these too could be explained by His relationship with John the Baptist, who was likely an Essene, in which case, his thinking would have been mystical rather than that of a typical temple Jew of the time.
Anyway, there is no proof either way, but my intuition leans toward Him having been in India, but of course my religious background might lead me that way anyway. My gut tells me that in the course of the next 100 years or so, we will learn more about our past, and in the course, we will learn that the experience of God among us is trans-cultural.
Your friend
Sufjon