"On April 13, 2019, about two hours from the CDT, five to six Mexican military officers interrogated two US Army soldiers who were carrying out border support operations on an unmarked vehicle (Customs and Border Protection) near the southwest border near Clint, Texas, "the US Northern Command told CNN in a statement.
"US soldiers were in US territory" during the meeting, the statement added.
During the incident, Mexican soldiers aimed their weapons at US troops, removing a soldier's weapon and returning it to the unmarked American vehicle, officials said.
Mexican troops were armed with what appeared to be assault rifles, an official said.
Authorities said US soldiers allowed the weapon to be carried "in an attempt to reduce the escalation of a potentially volatile situation."
"Throughout the incident, US soldiers followed all the established procedures and protocols," said Northern Command.
The meeting occurred south of the border in the area, but north of Rio Grande, officials said.
However, officials said the river in that area consists of a dry riverbed full of shrubs, which makes it "very easy" for people to be confused over the border of the border.
One of the American soldiers spoke some Spanish and was able to explain the situation to the Mexican forces. Both sides spoke of the incident and promised to dispose of it in the future, officials said.
"An investigation by (Customs and Border Patrol) and (Department of Defense) revealed that the Mexican military believed that US Army soldiers were south of the border," said Northern Command, adding that US troops were north of the border. .
"Although they were south of the border fence, US soldiers remained in US territory, north of the royal border," the statement said, adding that "after a brief discussion between the soldiers of the two nations, the Mexican military left the area ". "
President Donald Trump has already ordered the armed forces to support border security, and the United States has about 3,000 troops working in the Department of Homeland Security on the southern border with Mexico, as well as some 2,000 National Guard troops.
The Pentagon expects additional troops to be sent to the border to support additional pending DHS assistance requests.
On Friday, interim Defense Secretary Pat Shanahan told reporters at the Pentagon that he did not "have a finite number" in terms of how many additional troops would be sent, but said the Pentagon was "anticipating" what DHS needs before receiving a formal request for assistance.
"When the DHS loses its ability to process the migrant family, when you think about their finite ability to apprehend, they get really stuck on the processing side of things, so working with the joint team, we're finding a way. as we do more monitoring and detection for them, we can perhaps assume that as a mission, "Shanahan said.