Seven bridges, two buildings razed as Mandalay cracks down on unscrupulous use and sale of agricultural land.
Villagers have already been displaced without compensation, Karen Human Rights Group says
The local govt has not yet decided if it will lease some 70,000 abandoned acres of farmland to local ethnic farmers or private companies.
Lawmaker urges return of 200 acres confiscated in 1990s; military says farmers lack paperwork.
The armed group says individuals and companies should not be issued licenses to use lands owned by IDPs for agriculture.
In conjunction with international fund, plan would see unused land turned over to would-be farmers and smallholders.