Sunday night's Las Vegas shooting left at least 58 people dead and injured more than 500 as alleged shooter Stephen Paddock fired down on concertgoers from a hotel room above on the Las Vegas strip.
So far, police believe Paddock acted alone - which could make the motive harder to determine.
Danley said Paddock "never said anything to me, or took any action that I was aware of, that I understood in any way to be a warning that something disgusting like this was going to happen".
Outside the USA, recent attacks that have resulted in terrorism charges include the November 2015 Islamic State attacks in Paris, which killed 130, and the 2011 rampage by Norwegian mass killer Anders Breivik, a neo-Nazi who gunned down 77 people in 2011.
Paddock transferred $100,000 to the Philippines in the days before the shooting, a USA official briefed by law enforcement but not authorized to speak publicly because of the continuing investigation told The Associated Press on condition of anonymity.
The US source said Danley was not under arrest but that the Federal Bureau of Investigation hoped she would consent to be interviewed voluntarily. But investigators later said she had been interviewed, and was "no longer being sought out as a person of interest".
According to his brother, Paddock was a high-stakes gambler and their bank-robber father was once on the FBI's 10 Most Wanted list.
Speaking to reporters Tuesday as he departed on a trip to Puerto Rico, Trump called the gunman "demented" and a "very, very sick individual".More news: President Visits Las Vegas
USA officials have reacted cautiously to a claim by the Islamic State jihadist group that the shooter had carried out Sunday night's massacre on its behalf. Authorities had previously said 59 were killed in the shooting, but on Tuesday clarified that number included the shooter. The first victim to be named was Sonny Melton, 29, a nurse from Tennessee.
Heather Melton said she knew he probably was gone, but she wanted to hope. "He grabbed me from behind and started running". Other victims described the scene as a war zone. She was there until she flew to LAX yesterday night, according to a Philippine immigration official who spoke on condition of anonymity. He was not injured.
A single rose is left at the door of the Mandalay Bay hotel and casino in Las Vegas, on Tuesday, Oct. 3, 2017. Prior to her arrival, Las Vegas Sheriff Joseph Lombardo said "we anticipate some information from her shortly".
- A total of 47 guns have been recovered from three locations: Paddock's hotel room and his two Nevada homes in Verdi and Mesquite.
During the upcoming legislative session, Inslee said he wants the legislature to ban bump stocks, which are devices that convert semi-automatic rifles to fully automatic weapons. But he could have also used widely available trigger cranks on a semiautomatic weapon that would have allowed him to fire almost 700 rounds per minute.
The Las Vegas attack is the deadliest shooting in recent USA history, surpassing the toll of 49 dead in an attack on a Florida nightclub in June 2016.
Before moving to Mesquite, Nevada, he lived in another town called Mesquite in Texas. Residents must be at least 55, and no children are permitted to live there. The community includes an 18-hole golf course, indoor and outdoor swimming pools and a recreation center. Nineteen more guns were found at his home in Mesquite, about 80 miles northeast of Las Vegas, and seven at his house in Reno.
Here's the Twitter pushback from people who are calling Paddock a terrorist and his shooting an act terrorism.
As his officials said the President would travel to Las Vegas on Wednesday, a day after he visits Puerto Rico, he added: "Our unity can not be shattered by evil and our bonds can not be broken by violence".