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.

The man who opened fire at a Midtown Manhattan office building last month, killing four people and injuring another before fatally turning the gun on himself, had a history of run-ins with police in his hometown of Las Vegas,

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.