In June, 34% of the encounters were of migrants who’d had at least one previous encounter in the last year.
At the end of June, the average time in Customs and Border Protection custody was down to 28 hours, according to the DHS source familiar.
In March, Homeland Security Secretary Alejandro Mayorkas estimated that the US was “on pace to encounter more individuals on the southwest border than we have in the last 20 years.”
Most encounters in June were of single adults, but families and unaccompanied children were up from the previous month. Customs and Border Protection intercepted around 55,805 family members and 15,253 unaccompanied children in June, up from 44,639 and 14,158 in May, respectively.
The border agency does not comment on data until it is publicly released, which is usually around the first week of the month.
CNN’s Priscilla Alvarez contributed to this story.