The attorney for the man who sold what would become the deadly weapon in a mass shooting in New York City earlier this week said his client legally sold his co-worker the gun.

A 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, authorities said Wednesday.

The gunman who killed four people in a New York City shooting Monday was the son of a former Los Angeles Police Department officer, according to a spokesperson for the NYPD. Shane Tamura, 27, of Las Vegas,