LAS VEGAS (AP) - Investigators are reconstructing the life and recent activities of the Las Vegas shooter who killed 59 people - but still have not concluded what motivated retired accountant and high stakes gambler Stephen Paddock to commit the worst mass killing in recent U.S. history.
Paddock's girlfriend, who was in the Philippines during Sunday's bloodbath, was met by FBI agents at Los Angeles airport and was expected to be questioned on Wednesday.
And President Donald Trump was heading to Las Vegas to with law enforcement officers and the survivors of the country music concert shooting outside the Mandalay Bay hotel casino.
More about the deadliest mass shooting in modern U.S. history:
THE INVESTIGATION
Authorities said Paddock planned the attack methodically, not only stockpiling nearly two dozen guns in his hotel room but setting up cameras in the peephole and on a service cart outside his door, apparently to watch for police coming for him.
FBI Deputy Director Andrew McCabe , speaking at a cybersecurity forum Wednesday in Boston, said investigators are busy "reconstructing the life, the behavior, the pattern of activity of this individual and anyone and everyone who may have crossed his path in the days and the weeks leading up to this horrific event."
Asked if investigators had determined why Paddock carried out the attack, he said, "We are not there yet." He suggested that was a surprise and unusual.
"This individual and this attack didn't leave the sort of immediately accessible thumbprints that you find on some mass casualty attacks," McCabe said.
THE GUNMAN
Paddock transferred $100,000 overseas in the days before the attack, a U.S. official briefed by law enforcement told The Associated Press.
Investigators are trying to track that money and are also looking into at least a dozen financial reports over the past several weeks that said Paddock had gambled more than $10,000 per day, the official said.
Retired FBI profiler Jim Clemente speculated that there was "some sort of major trigger in his life - a great loss, a breakup, or maybe he just found out he has a terminal disease."
He also noted a possible genetic component to the slaying: Paddock's father was a bank robber who was on the FBI's most-wanted list in the 1960s and was diagnosed as a psychopath.
Paddock, however, has no apparent history of mental illness.
THE DEAD
The victims included a man celebrating his 23rd wedding anniversary, a UCLA nurse and a California firefighter.
Sunrise Hospital and Medical Center said an additional person died Tuesday afternoon. But the death toll remained at 59 after Clark County Coroner John Fudenberg revised his earlier count of victims downward by one.
More than 500 people were injured in the attacks. Forty-eight of them, including a 16-year-old boy and a 17-year-old girl, remained in critical condition Tuesday night, hospital officials said.
THE SURVIVORS
The staggering count of people injured in the shooting at a Las Vegas music festival means their recoveries are likely to be as varied as the victims themselves.
Some injuries are as simple as broken bones, while others are gunshot wounds involving multiple surgeries and potential transplants. All come with the added emotional scars of enduring the shooting.
More than 500 people were injured. At least 130 people remained hospitalized Tuesday, with 48 listed in critical condition.
At Sunrise Hospital and Medical Center in Las Vegas, the count of those treated included 120 people who were struck by gunfire, a glimpse of the amount of ammunition unleashed in the attack.
TRUMP VISIT
President Donald Trump was on his way Wednesday to Las Vegas to meet with survivors and law enforcement officials.
Trump told reporters as he left the White House that he and first lady Melania Trump will "pay our respects and to see the police who have done a really fantastic job in a very short time."
Asked about the shooter, Trump said "yeah, they're learning a lot more. That will be announced at an appropriate time."
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Associated Press writer Michael Balsamo contributed to this report from Las Vegas.
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