The family faced financial difficulties, and by the age of 10, Greba began stealing.
Two months later, he committed another murder, killing an elderly man he encountered in a barn before fleeing into the forest.
Less than a week later, he killed an elderly woman, ate food from her house, took some valuables, and returned to the forest.
Authorities launched a search, eventually discovering his hut, though Greba watched them from nearby.
Following this, Greba committed a double murder, killing two elderly women whom he had asked for shelter.