Asan Akbar seemed like the kind of kid who might launch his own business, a devout Muslim who graduated third in his high school class, belonged to an honor society and won scholarships, classmates and teachers said.
Fifteen years later, he is under military arrest, suspected of a grenade attack in Kuwait that killed a 101st Airborne Division captain and wounded 15 soldiers -- a grisly chapter in the war against Iraq.
The gap between those two images of Akbar baffles those who believed they knew him, and those who are investigating.
Akbar had no motive for launching an attack against fellow soldiers, his mother said Monday. "My child wouldn't do anything like that."
Federal agents say they are investigating several scenarios that could have led to the deadly episode, including the possibility that Akbar's attack had long been planned.
"This whole idea that he could have been pre-positioned in the military is something that has to be looked at," said one Justice Department official. But so far there is no evidence that Akbar acted in concert with others, he added.
Even Akbar's decision to join the military in April 1998 came as a surprise.
One housemate from Akbar's years at UC Davis said he was astonished that Akbar enlisted.
"He just struck me as coming from a different culture," said the housemate, a former Marine who spoke on condition of anonymity.
Witnesses said the suspect in the killings rolled a grenade into each of three tents of sleeping officers and senior noncommisioned officers and shot at least two fellow soldiers as they ran out of the tents. Capt. Christopher Scott Seifert, 27, was killed in the attack.
The incident is under investigation and charges have not yet been filed, military officials said.
Quran Bilal, Akbar's mother, said she had not heard about the incident until a newspaper reporter called her in Louisiana on Sunday. "I thought it was someone joking with me or playing a game with me," Bilal said.
Bilal said she last saw her son, a combat engineer, in January at Ft. Campbell, Ky., where he was stationed. "He was putting all his stuff in storage," she said. "He said he was going [to Iraq] to blow up bridges."
Bilal described her son as a good Muslim who regularly attended services at a mosque. He was not a man who harbored grudges, she said. "He never expressed any anger about the Army to me."
She added, "I would like to see him. I want to see him in his face. I don't believe nothing until I see him.... What would he want to do this for? He had no reason, no motives. When you have children you know what they would do, and my child wouldn't do anything like that."
Akbar was born in Los Angeles 31 years ago as Mark Fidel Kools. His mother changed his name to Hasan Akbar when he was 3. Later, the spelling of the first name was changed to Asan.
Bilal and her family moved to Louisiana when Akbar was young, staying for about eight years before returning to Los Angeles. For a while, the family lived on Martin Luther King Jr. Boulevard near Central Avenue, almost directly across the street from the Bilal Islamic Center, where Akbar attended Sunday classes.
To those who knew him at Locke High School, Akbar was a model student.
He spent his junior and senior years at the South Los Angeles campus, where he competed in track, worked in the college counseling office and distinguished himself as a member of the academic decathlon team.
By the time he graduated in 1988, Akbar had a 3.67 grade-point average.
"He was a sound, straight student -- a humble, well-mannered young man," said Principal L. Gail Garrett, who was a Locke teacher in the late 1980s and remembered Akbar well.
Akbar did not make his religious beliefs known to others and never expressed antipathy toward the United States, Garrett said.
Akbar was well liked by those around him; he was nominated by his teachers and peers to join the Ephebians -- an honor society reserved for top students as a reward for good grades and community service in the Los Angeles Unified School District.
On Monday, Garrett pulled out a copy of Locke High's yearbook from 1988 and showed Akbar's senior class picture. In it, he looked younger than his peers, his smile and cheeks filling the entire picture.
"Look at him," she said, "he was just a sweetheart."
An SAT score high relative to others at Locke won Akbar scholarship money and acceptance to UC Davis.
Locke's college counselor, John Mandell, said he expected Akbar to attend graduate school and that his former student talked about starting his own engineering firm to improve the lot of other young people.
"He was very passive, even-keeled. A nice sense of humor. He wasn't a radical."
But at Davis, Akbar's reputation as a diligent student rapidly diminished.
"He didn't seem to be a very good student because he wasn't really into it," professor Mont Hubbard said Monday.
Students at Davis who, as Akbar did, major in mechanical engineering and aeronautical sciences learn the physics and mechanics needed to design, build and operate complex machines and vehicles including aircraft. Some students work on futuristic cars and trucks.
Akbar left no particular mark on such projects. He took nine years to obtain an undergraduate engineering degree -- an unusually long period. In his last year at the university he married, a match that ended in divorce a few years later.
Hubbard remembered Akbar as aloof and sullen, and said he rarely showed up for class.
"I could see," Hubbard said, "how he would have trouble finding a job."
As of Monday, federal agents investigating Akbar had found little in Davis that would foretell any sort of a radical turn.
"In terms of a larger context," said FBI spokesman Nick Rossi in Sacramento, "we simply have no evidence at this time."
After graduating in 1997, Akbar moved to Moreno Valley in Riverside County, where his mother was living. From there, his next move was to the Army.
At the apartment complex in Clarksville, Tenn., where Akbar lived, neighbors said no one knew him well. Akbar, they said, would smile and wave but rarely stopped to talk. He was almost never out of his uniform, a sign of dedication, some thought.
Akbar left the impression of being a dedicated Muslim. Willie Shamell Jr., who lived in the same building as Akbar for about a year, recalled Akbar's refusing offers of barbecued ribs or beer and shunning common cuss words. When asked, Akbar said he was following his faith.
Shamell recalled their final conversation as Akbar packed up his home. Shamell, a veteran of the 1991 Gulf War, said he told Akbar: "Take care. Everything will be straight back home. Just focus on what you're doing over there."
Akbar replied: "OK."
Times staff writers Megan Garvey, Janet Wilson and Nora Zamichow and researcher Lianne Hart contributed to this report.