A 12-year old boy was killed in a land mine blast occurred in the precincts of Sadar Levis Thana on Thursday. An official of Levis Force said that one Mahwar was killed when he stepped on a land mine planted by unidentified men in the Rabi canal area of the Naseerabad district. Levis rushed to the site and handed over the body to the heirs after legal formalities. Levis has registered a case.