Newly released police reports and body camera footage are shedding light on the troubled path that led a shooter on a cross-country drive from his home in Las Vegas to the skyscraper in Manhattan where he killed four people last week before turning the gun on himself.

He’s been calm and cooperative with us but he did tell us he had a handgun in his bag,” a Las Vegas paramedic said about Shane Tamura.

The man who opened fire and killed four people inside a Manhattan high-rise before taking his own life had a long-documented history of mental illness, according to newly revealed 911 records from Las Vegas police.