McALLEN, Texas (AP) — The U.S. Border Patrol has made more immigrant arrests in the Rio Grande Valley in less than eight months than it did in all of the previous 12.

The agency confirmed Thursday that agents in the busiest sector on the Southwest border had made nearly 160,000 arrests since the Oct. 1 start of the fiscal year. That surpasses the more than 154,000 it made last year. Internal documents obtained by The Associated Press show that last year’s total was beaten last week.