UPDATE 1:46 p.m. EST:
Santiago was ordered held without bond during a 15-minute hearing Monday afternoon. U.S. Magistrate Judge Alicia Valle said the death penalty could apply, which he said he understood.
Santiago said he only had $5 or $10 in the bank and made $2,100 a month working for an Alaskan security company.
More than a dozen officers kept watch outside the courthouse, carrying rifles and wearing bulletproof vests.
Esteban Santiago, the Army veteran accused of killing five people in a mass shooting at Fort Lauderdale-Hollywood International Airport on Friday, will appear in federal court Monday morning.
Santiago, 26, faces charges that could lead to the death penalty if convicted.
This hearing is likely to focus on ensuring Santiago has a lawyer and setting future court dates.
Who is Esteban Santiago?
Esteban Santiago-Ruiz, was born in New Jersey, lived in Alaska and Naples, Florida, and was discharged from the National Guard four months ago. He received a general discharge from the Alaska Army National Guard last year for unsatisfactory performance of his duties.
He had served as a member of the Puerto Rican National Guard for six years and served one-year overseas in combat in Iraq, according to family members who spoke with the media.
The Associated Press and Circa's Sara A. Carter contributed to this report.