But in a rare admission, a Justice Department memo and other documents obtained by the San Antonio Express-News say federal authorities know terror suspects are in this country and know who allegedly helped bring them here through Mexico and Texas: a Somali man in custody near San Antonio.

Last year, Houston-area news outlets reported that homeland security issued a vague bulletin to Texas law enforcement to be on the lookout for Mohamed Ali, a purported member of Somalia-based Al-Shabaab, which has aligned itself with al-Qaida and Osama Bin Laden…

Locally, the FBI’s Joint Terrorism Task Force has been trying to retrace the steps and untangle the contacts of Ahmed Muhammed Dhakane…

Five of Dhakane’s clients are listed in the memo — Mohamded Ma’alin, Mohammed Ereg, aka “Idris,” Hassan Yare and two whose last names authorities didn’t know: Adani and Abirizak, aka “Al Qaeda.”

Three of them are known to have entered the U.S., according to the memo.