The gunman whose 2013 rampage at Los Angeles International Airport left a Transportation Security Administration officer dead and three other people injured was sentenced Monday to life in prison for the premeditated, deadly attack in which he targeted federal officers, reports the Los Angeles Times .

Paul Ciancia, 26, had pleaded guilty to murder and other charges earlier this year as part of a deal in which federal prosecutors withdrew their decision to seek the death penalty for the shootings at the airport’s bustling Terminal 3.

He said he targeted TSA officers after coming to believe they were harassing people, including disabled people.

"I wanted to make a statement!" he said in court, his voice rising.

He apologized to the teacher who was among three people wounded in the rampage, expressing deep regret. But he never mentioned the impact of the shooting on the TSA officer he killed or two other officers who were wounded.