A lawyer in Mexico for a leading U.S. drug manufacturer, which promotes its global anticorruption policy, offered to pay an opposing expert in a business lawsuit if he would leave the country on a key court date to undermine the case, according to a recording of the conversation and sworn testimony provided to The Associated Press.

The recording and its disclosure offer an unusual glimpse into the bare-knuckle tactics of the global marketplace and come as the Justice Department and the Securities and Exchange Commission crack down on overseas misconduct by U.S. companies, part of a multinational effort to clean up international commerce.