The FBI has concluded its investigation into the mass shooting at the Route 91 Harvest Festival in Las Vegas on Oct. 1, 2017, that left 58 people dead and more than 500 injured when a lone gunman opened fire from the 32nd floor of the Mandalay Bay Hotel during Jason Aldean’s headlining set.

After a nearly 12-month investigation, the Las Vegas Review Panel (LVRP) highlighted 10 Key Findings regarding potential motivating factors as well as the gunman’s pre-attack behaviors.

Among the review panel’s findings:

• The LVRP found no evidence that [the shooter’s] attack was motivated by any ideological or political beliefs. He was not seeking to further any religious, social, or political agenda through his actions. He conspired with no one and he acted alone.
• There was no single or clear motivating factor behind [the shooter’s] attack.
• Investigators found no manifesto, video, suicide note, or other communication (hidden, encrypted, coded, or otherwise) relating to the planned attack or explaining his reason for attacking.
• The LVRP concludes that [the shooter’s] intention to die by suicide was compounded by his desire to attain a certain degree of infamy via a mass casualty attack.
• [The shooter] displayed minimal empathy throughout his life and primarily viewed others through a transactional lens of costs and benefits.

You can read the entire report here.