One hundred people, whose DNA shows connections to a dead baby found abandoned in Bolton, "may be related" according to police.
Detective Inspector Aaron Duggan says officers will rank the matches according to their "proximity" to the town.
More top news
We are into the longest cold spell of winter so far. More wintry flurries and bitterly cold weather to come
Windy today, gusts 40-50mph at the coast. Odd wintry flurry across West Lancs, Cumbria, N Wales, bright and feeling raw elsewhere
Pupils at a school in Skelmerdale have made a heartwarming film about what books they love, and what they want to be when they grow up.