<h2 class="topline-heading">Topline</h2><p>Police found an additional weapon in the vehicle of a gunman who killed four in a Manhattan office building Monday, as investigations into his actions and motive continue Tuesday.</p><figure class="embed-base image-embed embed-0" role="presentation"><div class="image-embed__placeholder"><img src="https://specials-images.forbesimg.com/imageserve/688918bf5655574fd83e719a/Six-people--including-the-gunman--are-dead-in-New-York-City-shooting/960x0.jpg?cropX1=0&amp;cropX2=2186&amp;cropY1=0&amp;cropY2=1458" alt="Six people, including the gunman, are dead in New York City shooting" width="100%" height="auto"></div><figcaption><fbs-accordion><p class="color-body light-text" role="button">The shooting occurred Monday night. (Photo by Kyle Mazza/Anadolu via Getty Images)</p></fbs-accordion><small>Anadolu via Getty Images</small></figcaption></figure>

<div class="key-facts-element"><p>The suspect, identified as 27-year-old Las Vegas resident Shane Devon Tamura, had a loaded revolver in his car at the time of the attack, according to <a href="https://www.cnn.com/us/live-news/nyc-manhattan-shooting-shane-tamura-07-29-25#cmdor306k00053b6sgm87n2xd" rel="nofollow noopener noreferrer" target="_blank" class="color-link" title="https://www.cnn.com/us/live-news/nyc-manhattan-shooting-shane-tamura-07-29-25#cmdor306k00053b6sgm87n2xd" data-ga-track="ExternalLink:https://www.cnn.com/us/live-news/nyc-manhattan-shooting-shane-tamura-07-29-25#cmdor306k00053b6sgm87n2xd" aria-label="multiple">multiple</a> <a href="https://www.nbcnews.com/news/us-news/live-blog/new-york-city-shooting-live-updates-police-investigate-motive-five-peo-rcna221654/rcrd85576?canonicalCard=true" rel="nofollow noopener noreferrer" target="_blank" class="color-link" title="https://www.nbcnews.com/news/us-news/live-blog/new-york-city-shooting-live-updates-police-investigate-motive-five-peo-rcna221654/rcrd85576?canonicalCard=true" data-ga-track="ExternalLink:https://www.nbcnews.com/news/us-news/live-blog/new-york-city-shooting-live-updates-police-investigate-motive-five-peo-rcna221654/rcrd85576?canonicalCard=true" aria-label="outlets">outlets</a>, one of two weapons he had in his possession as he carried out the shooting with an M4 assault-style rifle.</p></div>

<em>This is a developing story. Check back for updates.</em>

The suspect killed four people inside a Manhattan office building Monday and likely sought to target the headquarters of the National Football League.{ai:summary}<p>Police discovered an additional weapon in the vehicle of Shane Devon Tamura, the 27-year-old gunman who killed four people in a Manhattan office building. Tamura was armed with an M4 assault-style rifle during the shooting and had a loaded revolver in his car.</p><p>Investigations into the shooting and Tamura's motives are ongoing. This incident marks a significant act of violence in New York City. #crime</p>

What We Know About Manhattan Shooting Suspect As Police Find Another Loaded Gun

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