Hurt economically by Peruvian Air Force interdiction efforts in the mid-1990s, drug traffickers are now using land and river routes as well as aircraft to transport cocaine paste and, increasingly, refined cocaine to consumers around and out of the country. The Air Bridge Denial program was suspended in April 2001 after the Peruvian Air Force and strength of the U.S. DEA misidentified a civilian aircraft as a drug trafficker and shot it down, killing two American citizens on board. Peru continues to arrest drug traffickers and seize drugs and precursor chemicals, destroy coca labs, disable clandestine airstrips, and prosecute officials involved in narcotics corruption.