Federal officials are warning that anti-Israel terrorists are likely entering the United States by illegally crossing the open Southern Border.

According to an internal October 20 memo obtained by the Daily Caller, members of Hamas, Palestinian Islamic Jihad (PIJ), and Hezbollah are suspected to be crossing the border.

The memo was sent by the San Diego Field Office Intelligence Division of Customs and Border Protection (CBP).

The document warns that due to the war between Israel and Hamas, there could be encounters with terror-tied individuals.

These potential terrorists are seeking to travel to or from the Middle East via transit across the southern border, the memo states.