(CNN)For days, as migrants have traveled thousands of miles toward the US-Mexico border, President Donald Trump has warned of the dangerous people who make up their pack. He’s tweeted that “[c]riminals and unknown Middle Easterners” are “mixed” in with the caravan, and, on Monday afternoon, doubled down on his claims, telling reporters on the South Lawn of the White House to “go into the middle” of the caravan and “search. You’re gonna find MS-13. You’re gonna find Middle Eastern.” While the President insinuates terrorists have infiltrated the group that CNN crews have observed to include mostly mothers and their children, a senior counterterrorism official has also refuted the President’s claim. “While we acknowledge there are vulnerabilities at both our northern and southern border, we do not see any evidence that ISIS or other Sunni terrorist groups are trying to infiltrate the southern US border,” a senior counterterrorism official told CNN. Officials at the Department of Homeland Security have been less direct, but have disproved the President’s point nonetheless. When asked for evidence for the President’s claim that “[c]riminals and unknown Middle Easterners are mixed in” with caravan migrants, a DHS official responded with a hodgepodge of numbers: “In FY 18, CBP apprehended 17,256 criminals, 1,019 gang members, and 3,028 special interest aliens from countries such as Bangladesh, Pakistan, Nigeria, and Somalia. Additionally, CBP prevented 10 known or suspected terrorists from traveling to or entering the United States every day in fiscal year 2017.” None of that, however, proves that criminals or people from the Middle East are in the caravan crowd. And on top of that, the countries the DHS official mentioned are actually South Asian and African, not in the Middle East. There was also no mention of whether Customs and Border Protection made those apprehensions at the southwest border or elsewhere. It is also unclear how or where CBP prevented terrorists from traveling to the United States. CBP spokesperson Corry Schiermeyer said she would not comment on the President’s tweets, and referred additional questions to DHS, which oversees CBP. Former Homeland Security acting Undersecretary John Cohen told CNN that there has “clearly been an effort” by the administration to create a sense of fear as the caravan gets closer to the US.