The New York City Police Department is investigating three separate incidents involving individuals entering and exiting the sewer networks in Brooklyn and Queens.

紐約市警局正在調查三起獨立事件，涉及個人進入並離開布魯克林與皇后區的下水道網絡。

The NYPD 62nd Precinct reported that surveillance footage documented seven individuals emerging from a manhole in the Gravesend area of Brooklyn; however, no structural damage to the system was identified. While law enforcement officials maintain that these incursions pose no immediate public threat, they have reiterated that unauthorized entry into the 12,000-kilometer network is both illegal and hazardous.

紐約市警局第 62 分局報告指出，監控片段記錄到七名個體從布魯克林 Gravesend 地區的一個人孔蓋中現身；然而，系統未發現結構性損毀。雖然執法官員堅持這些闖入行為不構成即時的公共威脅，但他們重申，未經授權進入這個 12,000 公里的網絡既非法且危險。

Analysis by former urban explorer Steve Duncan suggests that the subjects likely targeted 19th-century sewer mains. These structures, characterized by handmade brickwork and diameters exceeding 1.8 meters, often follow the trajectories of prehistoric waterways that were subsumed by industrialization. Duncan posits that the timing of these excursions—occurring in the early morning following heavy precipitation—was strategically selected to minimize waste flow and optimize visibility.

前城市探險家 Steve Duncan 的分析顯示，這些對象可能瞄準了 19 世紀的下水道主幹管。這些結構以手工磚造為特徵，直徑超過 1.8 公尺，通常沿著被工業化所掩埋的史前水道軌跡而建。Duncan 認為，這些出沒的時間點——發生在強降雨後的清晨——是經過策略選擇，以將廢物流量降至最低並優化能見度。

Despite the perceived allure of urban exploration, the environment presents significant biological and chemical risks. Duncan cited previous hospitalizations due to extremity infections and noted the necessity of gas meters to detect flammable hydrogen sulfide. Conversely, academic and security perspectives suggest more malevolent motivations. Professor Magued Iskander of New York University noted that sewers can facilitate unauthorized building access, while retired detective David Sarni highlighted the systemic vulnerability of critical infrastructure to exploitation. Historical precedents further support the theory of illicit gain, as evidenced by the arrest of three individuals last year for searching for valuables in a Brooklyn sewer, and a similar incident involving a Department of Environmental Protection employee a decade prior.

儘管城市探險具有吸引力，但該環境存在顯著的生物與化學風險。Duncan 引用了先前因肢體感染而住院的案例，並指出偵測易燃硫化氫之氣體偵測儀的必要性。相反地，學術與安全視角則暗示有更惡意的動機。紐約大學的 Magued Iskander 教授指出，下水道可便於非法進入建築物，而退休偵探 David Sarni 則強調關鍵基礎設施面對被利用時的系統性脆弱。歷史先例進一步支持非法獲利的理論，例如去年有三名個體因在布魯克林下水道搜尋貴重物品而被捕，十年前亦有環境保護局員工涉及類似事件。

Law enforcement continues to investigate the motives of the unidentified individuals while emphasizing the legal and physical dangers of the sewer system.

執法部門繼續調查這些身分不明個體的動機，同時強調下水道系統的法律與生理危險。