The United States paused safety inspections for avocados and mangos from a top-producing Mexican state due to a security incident involving U.S. Department of Agriculture (USDA) staff, a spokesperson for the agency said on Monday.

The spokesperson said Mexican exports from the western state of Michoacan have not been blocked, and avocados and mangos already in transit would not be affected by the suspension of inspections, which would be paused “until further notice.”

A prolonged suspension to the avocado inspections in particular could cause a significant hit to one of Mexico’s top farm exports, which have steadily grown in popularity with U.S. consumers in recent years.

A government source in Michoacan told Reuters the temporary suspension was triggered last Saturday following an incident at a protest in support of local police in the municipality of Paracho.