The agency said on Twitter that images and videos of US border patrols on horseback and harassment of Haitian migrants at the US-Mexico border had prompted the Department of Homeland Security to open an investigation.

On Monday, DHS tweeted that it had reviewed footage from the border and received too many allegations of abuse against migrants.

“Staff is deeply concerned and the facts obtained from a full investigation, which were carried out swiftly, will determine appropriate disciplinary action,” DHS said.

The Office of Professional Responsibility will lead the investigation and also send personnel to the border where thousands of Haitians live and hope to seek refuge in a makeshift camp in the Texas city of Del Rio in recent days. United States of America.

The announcement of the investigation follows scenes from the Rio Grande in which border officials track, arrest and intimidate migrants and use their horses to prevent them from moving to the United States. . In a video recorded by Al Jazeera, an agent can be heard using insulting words as he uses his horse to stop the migrants and take them to the river.

White House spokeswoman Jen Psaki described the footage as “terrible”.

In a speech from Del Rio, US Secretary of Homeland Security Alejandro N. Mayerkas warned Haitians trying to enter the United States and said security had been increased for those arriving before July 29. This protection does not apply to new arrivals.

“We are deeply concerned that Haitians who have embarked on this volatile migration route are receiving false information that the border is opened or that there is a temporary protection status,” he told a news conference. “I want to make sure that this is not the way to enter the United States.”