Deputy Commissioner of Police Abu Bakar Siddique today said the probe was launched after a victim woman lodged a written complaint in this regard with Chakradharpur police on Saturday.
According to the complaint, the 12 families of Raghoi village under Sonua block were ostracised for attending the 'Shradh' of one Bimo Murmu's father, who had been ostracised earlier.
The probe will be carried out by district planning officer J B Tirkey and the child development program officer, Sonua, Siddique told newsmen.
The ostracised families have been barred from using community well and the pond, and the villagers including shopkeepers have been directed to shun all sorts of dealings with them, she said in her complain.
She also alleged that the Gram Sabha has also threatened them to leave the village.