Authorities say the man who killed four people at a Manhattan office building bought the rifle he used in the attack and the car he drove across country from his supervisor at a Las Vegas casino.

The NYPD continues to work with investigators across the country to learn more about the gunman in Monday's deadly Midtown office shooting. CBS News New York investigator Mahsa Saeidi has the latest.

New photos provided to FOX 5 NY by police sources show the inside of the vehicle driven by Shane Tamura, who killed four victims when he opened fire inside a Manhattan building on Monday.

Police officer Didarul Islam and Blackstone employee Wesley LePatner are among the four people killed in Monday's New York City shooting.

NYC shooting at NFL headquarters: Roger Goodell addresses league employees, announces temporary office closure The commissioner advised league employees based in New York to work remotely at least ...

Who is Shane Tamura? NYC shooter, 27, who got an assault rifle despite ‘documented mental health history’ Gunman Shane Tamura had a ‘documented mental health history’ and ‘sprayed’ the ...

Gunman Shane Tamura had a ‘documented mental health history’ and ‘sprayed’ the Manhattan office building lobby with a military-style assault rifle, police say ...

Louisiana Republican Senator John Kennedy advocates for ‘idiot control’ instead of gun control after a gunman killed four in a Manhattan skyscraper — a reaction that has infuriated some ...

How did Shane Tamura get a gun and conceal carry permit? Tamura reportedly carried out the shooting using a Pametto State Armory AR-15 assault rifle with .223 caliber bullets.

A shooting in a Manhattan skyscraper late on Monday that killed four people, including a New York City police officer, has been marked by statements of sorrow and prayers for the victims' families ...

Investigators plan to question a man who supplied parts for a gun used in the shooting at a Manhattan office building that houses the National Football League’s headquarters, New York City ...

Manhattan shooting: Details of gun Shane Tamura used Tamura used a Pametto State Armory AR-15 assault rifle with .223 caliber bullets, NY Post reported. The gun costs around $420.