The head of the New York Police Department said that investigators plan to question a man who supplied parts for a gun used in the attack on Monday.

Investigators are combing through evidence in the wake of New York City’s deadliest mass shooting since 2000, trying to figure out more about the gunman who unleashed an assault-style rifle in Midtown,

Police have identified the man who they say entered a Midtown Manhattan office building wearing body armor and opened fire, killing four people with a high-powered rifle, as Shane Devon Tamura.The 27-year-old recently lived in Las Vegas,