A face-to-face meeting Tuesday between the Mexican and Japanese agriculture ministers failed to bridge differences hindering progress toward a free-trade agreement, Japanese officials said.

During a 40-minute meeting, Javier Usabiaga and Yoshiyuki Kamei pledged to continue ironing out "technical details."

But Kamei said the two made no mention of pork or orange juice, the issues that primarily caused talks to stall last year, saying these negotiations would be left to lower-level officials.