From Wikipedia, on the Lama
Following reported signs and visions, three search teams were sent out to the north-east, the east, and the south-east to locate the new incarnation when the boy who was to become the 14th Dalai Lama was about two years old.[21] Sir Basil Gould, British delegate to Lhasa in 1936, related his account of the north-eastern team to Sir Charles Alfred Bell, former British resident in Lhasa and friend of the 13th Dalai Lama. Amongst other omens, the head of the embalmed body of the thirteenth Dalai Lama, at first facing south-east, had turned to face the north-east, indicating, it was interpreted, the direction in which his successor would be found.
The team, led by Kewtsang Rinpoche, went first to meet the Panchen Lama, who had been stuck in Jyekundo, in northern Kham. The Panchen Lama had been investigating births of unusual children in the area ever since the death of the 13th Dalai Lama. He gave Kewtsang the names of three boys whom he had discovered and identified as candidates. Within a year the Panchen Lama had died. Two of his three candidates were crossed off the list but the third, a “fearless” child, the most promising, was from Taktser village, which, as in the vision, was on a hill, at the end of a trail leading to Taktser from the great Kumbum Monastery with its gilded, turquoise roof. There they found a house, as interpreted from the vision—the house where Lhamo Dhondup lived.
When the team visited, posing as pilgrims, its leader, a Sera Lama, pretended to be the servant and sat separately in the kitchen. He held an old mala that had belonged to the 13th Dalai Lama, and the boy Lhamo Dhondup, aged two, approached and asked for it. The monk said “if you know who I am, you can have it.” The child said “Sera Lama, Sera Lama” and spoke with him in a Lhasa accent, in a dialect the boy’s mother could not understand. The next time the party returned to the house, they revealed their real purpose and asked permission to subject the boy to certain tests. One test consisted of showing him various pairs of objects, one of which had belonged to the 13th Dalai Lama and one which had not. In every case, he chose the Dalai Lama’s own objects and rejected the others. Thus, it was the Panchen Lama who first discovered and identified the 14th Dalai Lama.