Police videos, 911 calls, and documents are revealing new details about the man who opened fire in a New York City office building last week, killing four. NBC News’ Erin McLaughlin reports.

LAS VEGAS (KSNV) — The Las Vegas Metropolitan Police Department is releasing new body camera footage related to past incidents involving New York shooter Shane Tamura. The department released the videos via their Public Records Unit's YouTube page Tuesday afternoon, which included seven videos and two 911 audio clips.

Shane Devon Tamura, who shot five people in NYC before taking his own life, had multiple run-ins with Las Vegas police, including mental health crises and a trespassing arrest.