Bryan Santiago tells The Associated Press that his family got a call in recent months from 26-year-old Esteban Santiago's girlfriend alerting them to the situation.
Bryan Santiago said he didn't know what his brother was being treated for and that they never talked about it over the phone.
He said Esteban Santiago was born in New Jersey but moved to the U.S. territory of Puerto Rico when he was 2 years old. He said Esteban Santiago grew up in the southern coastal town of Penuelas and served with the island's National Guard for a couple of years. He was deployed to Iraq in 2010 and spent a year there with the 130th Engineer Battalion, the 1013th engineer company out of Aguadilla, according to Puerto Rico National Guard spokesman Maj. Paul Dahlen.
Sen. Bill Nelson of Florida said that the gunman was carrying a military ID that identified him as Esteban Santiago, but that it was unclear whether the ID was his. Nelson gave no further information on the suspect.
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