TUCSON — In three separate incidents over a 24-hour period, Tucson Sector Border Patrol agents seized more than 1,940 pounds of marijuana with an estimated value of $970,000. Yesterday morning, Ajo station agents working northwest of Lukeville discovered 11 bundles of marijuana abandoned in the desert. The narcotics, weighing 569 pounds with an estimated value of $284,500, were seized and transported to the Ajo station for processing. Early Thursday, the Ajo station All Terrain Vehicle Unit discovered 14 bundles of marijuana abandoned in the desert northeast of Lukeville with assistance from a U.S. Customs and Border Protection helicopter. The narcotics,...