(KGTV) -- Nearly 4,000 people were detained along the Southwest border Monday, U.S. Customs and Border Protection said in a tweet Tuesday.
According to the agency, more than 3,700 people were apprehended, marking the "largest single day total in more than a decade."
At this time, it's unclear exactly where most of the apprehensions took place.
— CBP (@CBP) March 27, 2019
The agency says, so far in 2019, 169 people per-day have been apprehended at the San Diego sector of the border. In 2018, an average of 100 people were detained per-day.
The announcement was made the week after video taken during two separate incidents at Border Field State Park shows people climbing over the border fence in an attempt to get into the U.S.
During the first incident, dozens of migrants could be seen on video climbing over the fence and onto the beach on the U.S. side of the border.
In a second incident days later, video shows several men attempting to scale the border fence and sitting atop the structure.