Oct. 11 (UPI) -- Las Vegas gunman Stephen Paddock had no known gambling debts, the county sheriff said, and his girlfriend had no concerns about his mental health.
Clark County Sheriff Joseph Lombardo told the Las Vegas Review-Journal that investigators have sought information from Paddock's entire "family tree" and "things you would expect to find, we have not found."
Lombardo noted that investigators have not discovered any gambling debts of Paddock's, which had been been mentioned as a possible motive for the mass shooting - which authorities are still trying to learn.
The newspaper reported that contrary to previously published reports, Marilou Danley, Paddock's girlfriend, told investigators that she had no worries regarding his mental health.
Lombardo said investigators are making progress daily, and that doctors began Paddock's autopsy on Tuesday but have not noted any brain abnormalities.
Paddock opened fire on a country music festival on Oct. 1 -- killing 58 people and injuring over 500 -- as from the 32nd floor of the Mandalay Bay Resort and Casino.
However, MGM Resorts International, owner of the Mandalay Bay, has disputed the revised timeline.
"Many facts are still unverified and continue to change as events are under review. We cannot be certain about the most recent timeline ... and we believe what is currently being expressed may not be accurate," MGM spokeswoman Debra DeShong said.
MGM Resorts CEO Jim Murren addressed the IMEX America convention in Las Vegas Tuesday, thanking first responders and pledging that the incident has not injured the city's reputation among prospective tourists.
"We are heartbroken but not broken, and we are working together to heal this city, this industry," Murren said.
"This affects all of us," Roger Dow, CEO of the U.S. Travel Association, added. "We have watched other communities deal with this, whether it was Boston or whether it was Orlando. You watched them come from a one-off incident like this and say we're not going to let this define us."
Kenneth Feinberg, a Washington, D.C., lawyer whose firm specializes in victim compensation, agreed to help disperse donations collected by several organizations on behalf of victims. The donations are in the tens of millions of dollars, and will be handled by the National Center for Victims of Crime.
Feinberg said that after an Orlando, Fla., mass shooting that killed 49 people last year, several collection funds pooled their donations, and that he expects the Las Vegas funds to do the same.