I’ve been holding back on commenting on the terrible shooting at the Washington Navy Yard today. We’re finally getting some information on one alleged shooter —

The suspected shooter, identified by three law enforcement offcials as Aaron Alexis, a man in his 30s from Texas, is among the dozen dead. . . .

. . . Two law enforcement officials said the shooter is among the 12 dead. The dead shooter had an assault rifle and a handgun, two law enforcement officials said. One said he also had a shotgun.

The first, sketchy details about the suspect give no hints about what may have gone wrong.

Aaron Alexis, 34, grew up in Brooklyn with his mother Sarah and father Anthony Alexis, according to his aunt Helen Weeks.

“We haven’t seen him for years,” Weeks said of her nephew in a telephone interview. “I know he was in the military. He served abroad. I think he was doing some kind of computer work.”

A 2007 Navy Times feature cites an Aaron Alexis as having graduated from Navy boot camp that year from the Recruit Training Command, Great Lakes, Ill. Its unclear if this is the same Alexis, but the newspaper listed his occupational specialty as an Airman Recruit. A deleted web profile of an Aaron Alexis listed him as being stationed at Naval Air Station, Fort Worth, Tex.