The truck loaded in November with more than 1,000 containers of food and water for a planned border wall with Mexico has been detained by U.S. Customs and Border Protection in Arizona, according to a statement released Friday by the agency.
The incident happened on Saturday and was not related to a recent Border Patrol raid at the Mexican border, the statement said.
“The Border Patrol has been working closely with the Border Patrol Operations Center in Tucson to investigate the incident and take appropriate actions to protect the safety of U.s. citizens,” the agency said in the statement.
The Border Patrol does not identify the people it stops, nor does it share their names.
“ICE will continue to work with the Department of Homeland Security to investigate this matter,” the statement added.
The trucks were carrying supplies for an extension of a temporary wall that was being constructed in a Phoenix industrial park.
The border fence was designed to protect against illegal immigration, and was supposed to be complete in December.
Border Patrol officials have said it would cost $21.6 billion to build and finish the border fence, with construction expected to start later this year.