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
Vulnerable pensioners had to evacuate a day centre in Manchester after receiving threats of 'a backlash against the black community’.
A man from Manchester has been jailed for 13 years after he raped and sexually abused three children.
Greater Manchester Police says there has been a small increase in the number of hate incidents reported in the last few days.