In the early hours of a Friday morning in June, a strange and unsettling series of events unfolded beneath the streets of Brooklyn. More than a dozen people were observed entering and exiting city manholes in two separate neighborhoods, triggering a major multi-agency response and leaving residents and officials searching for answers.
The incidents occurred over a span of several hours between late Thursday night and early Friday morning. According to reports and activity tracked on crowdsourced safety apps, groups of individuals were seen prying open manhole covers, descending into the sewer system, and later emerging again.
The first episode took place around 11:00 p.m. in the Gravesend section of Brooklyn near McDonald Avenue and Colin Place. Witnesses reported seeing at least seven people open a manhole and disappear underground. Approximately three hours later, around 2:00 a.m., the same group reappeared.
While authorities began investigating that location, a second group was already preparing a similar action roughly eight miles away. Around 1:00 a.m., eight more individuals entered the sewer system near Heyward Street and Bedford Avenue. They remained underground for nearly three hours before climbing out just before 4:00 a.m. and leaving the area in a waiting vehicle.
The back-to-back nature of the incidents prompted a significant emergency response. Units from the NYPD, FDNY, and the Department of Environmental Protection responded to both scenes. Police K-9 units were brought in to track scents, while DEP crews inspected the sewer lines for any signs of structural damage, tampering, or hazardous materials.
Authorities later confirmed that the infrastructure itself remained intact and that no immediate threats were found inside the tunnels. What remains unclear is the identity of the individuals involved and their reasons for entering the sewer system in the middle of the night.
City officials were quick to stress the serious dangers of such activity. Sewers can contain toxic gases, including hydrogen sulfide and methane, which can cause unconsciousness or death within minutes. Sudden flooding from rainfall or industrial runoff presents another life-threatening risk, as does the unstable and confined nature of the tunnels.
Council Member Susan Zhuang issued a strong public warning, stating that sewers are not places for exploration or stunts. “Our sewers contain deadly gases, unstable surfaces, and serious flooding risks; they are not a place anyone should ever enter,” she said. She urged anyone who sees people tampering with manhole covers to call 911 immediately.
The investigation continues as authorities work to determine whether the two groups were connected and what motivated the unusual nighttime activity. While urban exploration has a certain mystique in popular culture, the reality of New York City’s underground infrastructure is far more dangerous than any adventure narrative suggests.
For now, the events of that night remain a strange and unresolved chapter in Brooklyn’s ongoing story — one that highlights both the curiosity of some residents and the very real hazards that exist just a few feet beneath the city’s streets.


























