The number of migrants crossing to the United States via Central America and Mexico could reach record numbers this year.

U.S. border authorities encountered more than 142,000 migrants at the U.S.-Mexico border in the first half of September, according to data shared by Mexico’s president, a tally on pace to match or even surpass previous monthly highs.

As many as 4,000 people per day are expected at the border.

So many migrants are climbing aboard trains that Mexico’s largest railway company said earlier this week it was suspending 60 freight train runs because of safety concerns, citing a series of injuries and deaths.

The mayor of Eagle Pass, a town on the US-Mexico border, announced a state of emergency citing “severe undocumented immigrant surge” after almost 10,000 crossed the Rio Grande River from Mexico into the town.

Two people, including a three-year-old boy, drowned after being swept away by the river.

U.S. Customs and Border Protection is temporarily suspending vehicle processing operations at a crossing in Eagle Pass “in order to redirect personnel to assist the U.S. Border Patrol with taking migrants into custody,” according to a statement released on Wednesday.

Agencies/Aljazeera.