The U.S. Border Patrol arrested nearly 10,000 unaccompanied immigrant children and families caught illegally crossing the border with Mexico in August. This is a 52 percent jump from August 2014, according to statistics published by the agency Monday afternoon. Many immigrants were actually looking for border control agents so that they could be arrested once they had crossed. An increase in the number of such crossings in August is unusual because it is the time of year when hot temperatures make it dangerous to try.  

The Border Patrol reported arresting 6,424 unaccompanied immigrant children and families in August 2014.

Since last October, border agents have arrested more than 35,000 children traveling alone and more than 34,500 people traveling as families, mostly mothers and children. The number of arrests for the year is down nearly 50 percent compared with a year ago, but border agents have reported a jump in arrests since July. Studies show that the children are attempting to cross multiple times.

The August increase comes a year after a surge of more than 68,000 unaccompanied children at the U.S.-Mexico border. Many were trying to escape violence in Honduras, El Salvador or Guatemala. For much of the year, the number of illegal border crossings by families and children has been far lower than last year, before increasing in July and August

U.S. officials say there’s a notable increase in the number of unaccompanied minors and families crossing the U.S.-Mexico border, presenting worries of a possible new refugee influx.