After a mock drill with 600 personnel and the CRPF on Sunday to clear 450 hectares of land from encroachers, an eviction drive is underway in Assam's Lakhimpur district. Affecting more than 500 families to clear 450 hectares of the land under Pavo reserved forest, 200 hectares was targeted in the first phase, beginning Tuesday, a senior police official reported. The eviction drive, earlier planned to be carried out in September was deferred due to floods.