The Chief Minister also urged the families of the victims to meet him in the state capital on March 25, a government spokesman said.
Five of the eight persons allegedly involved in the killing of a 32-year-old man and 13-year-old boy and hanging them from a tree in Jhabbar village have already been arrested.
The police claimed that the motive behind the killing was to loot their animals and make it look like a suicide case after the two persons left their homes with animals for Tutilawa village in the neighbouring Chatra district for an animal fair.
Later in a press release, the Chief Minister expressed deep sorrow at the killings of the two persons.
He asked the officials to ensure that such incidents do not recur.