Law enforcement officials stopped a serious security threat at the United States Capitol on Tuesday afternoon. Police took an 18-year-old male into custody after he was seen running toward the building while carrying a loaded weapon. The event began just after 12:00 p.m. when the individual parked a vehicle and moved quickly toward the Lower West Terrace. Officers confronted the man, who was wearing specialized protective gear and carrying extra ammunition. While the arrest happened quickly and without reported injuries, the presence of a loaded shotgun near the seat of government has raised questions about security and the person’s intent. Currently, police are looking into the suspect’s background and how he obtained the items found at the scene.

Incident Timeline and Known Details
The event occurred during a period when the Capitol was less busy than usual due to a scheduled break for lawmakers.
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12:00 PM: A white Mercedes SUV is parked near the Capitol grounds.
Immediately After: An 18-year-old male exits the vehicle and begins sprinting toward the West Front of the building.
Detection: US Capitol Police (USCP) officers observe the suspect holding a shotgun.
Arrest: Officers challenge the suspect; the individual complies and is taken into custody.
Search: Police examine the vehicle and the suspect’s person, finding tactical equipment and extra shells.
Summary of Event: An 18-year-old man was arrested after charging the U.S. Capitol with a loaded shotgun and tactical gear; he is currently being held as police investigate his motives and origins.

Evidence and Equipment Recovered
The following items were identified by USCP Chief Michael Sullivan during a press briefing following the arrest.

| Item Type | Description | Location Found |
|---|---|---|
| Firearm | Loaded shotgun | Carried by suspect |
| Ammunition | Additional shotgun shells | On suspect's person |
| Clothing | Tactical vest | Worn by suspect |
| Vehicle | White Mercedes SUV | Parked near Capitol |
| Protective Gear | Kevlar helmet and gas mask | Inside the SUV |
"The shotgun was loaded and he had additional rounds on him. The suspect was not known to authorities and is not from the local area." — USCP Chief Michael Sullivan
The Movement and Initial Contact
The suspect's actions were described as a "sprint" or a "charge" toward the building. According to police reports, the 18-year-old was spotted the moment he left his vehicle.
Officers at the Lower West Terrace noticed the weapon immediately.
The suspect reportedly followed police orders once he was confronted.
Investigators are now looking at why the man chose to run toward the building instead of approaching more slowly.
Vehicle Ownership and Origin
A major point of the investigation involves the white Mercedes SUV used by the suspect.
Registration: Chief Sullivan confirmed the vehicle is not registered to the 18-year-old suspect.
Residency: The man is reported to have "multiple addresses" and is not a resident of the Washington, D.C. area.
Unanswered Questions: How did a teenager gain access to a high-end vehicle registered to someone else? Did the additional gear—the gas mask and helmet—belong to the driver or the vehicle owner?
Legislative Environment and Security
The timing of the event is a factor in the ongoing investigation.
Congressional Recess: Members of Congress are currently away on a pre-scheduled recess, meaning the building was not at full capacity.
Upcoming Events: The incident happened roughly one week before the scheduled State of the Union address.
Security Readiness: Police noted they recently held drills for "active shooter" scenarios. Was the suspect aware that lawmakers were not in the building, or was the timing a coincidence?
Expert Analysis
USCP Chief Michael Sullivan provided the primary analysis of the police response and the suspect's status. He indicated that the department's training was a key factor in the quick arrest.
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Risk Assessment: Sullivan stated there is no evidence of other suspects at this time. The man appears to have acted alone.
Motive: The Chief noted that a motive is not yet clear. Investigators are looking for any statements the man may have made or documents he may have been carrying.
Targeting: While lawmakers were away, police are still investigating if specific members of Congress were intended targets or if the building itself was the focus.
Summary of Findings
The investigation into the Tuesday afternoon incident has established several facts while leaving others for further inquiry. An 18-year-old male, equipped with a loaded shotgun and wearing a tactical vest, attempted to approach the U.S. Capitol building at high speed. He was stopped by police without any shots being fired.
Current Implications:
The suspect is not local and was not on any law enforcement watchlists prior to this event.
The use of a vehicle not registered to the suspect suggests the need for a deeper look into his associates or family.
The presence of a gas mask and Kevlar helmet indicates a level of preparation for a confrontation or a chemical event.
Next Steps:
Federal and local authorities will continue to trace the history of the shotgun and the Mercedes SUV.
Digital forensics will likely be used to check the suspect's social media and communication history for a possible motive.
Security posture at the Capitol may be reviewed ahead of the upcoming State of the Union speech.
Sources and Context
Daily Mail: Gunman, 18, with loaded shotgun arrested after sprinting at US Capitol (Details on tactical vest and threat warning).
ABC News: Man armed with shotgun ran toward Capitol, apprehended by police (Details on the white Mercedes SUV and residency).
PBS NewsHour: Man arrested for running toward U.S. Capitol building with loaded shotgun, police say (Focus on vehicle registration and multiple addresses).
USA Today: Man who allegedly ran toward US Capitol with loaded shotgun arrested (Context regarding State of the Union and gas mask/helmet).
CNN Politics: Man arrested after charging Capitol building with loaded shotgun, police say (Note on lawmakers being away on recess).
Newsweek: Man arrested near US Capitol had loaded shotgun, wore tactical vest: police (Confirmed suspect complied with officers).