Nightmare on the Waterfront: Ex-Cop School Aide Charged with Brutal Stabbing Murder of Brooklyn Jogger Katie Suarez – Her Organs Save Four Lives as Shocking Mental Health Failures Exposed

In a horrifying attack that has gripped New York City, 28-year-old Katie Suarez—a dedicated bank teller, Brooklyn College graduate, and avid runner—was fatally stabbed in the neck while jogging along the Shore Parkway Greenway in Bath Beach, Brooklyn, on the evening of October 30, 2026. Just days later, her alleged killer, 27-year-old Sayed Mohᴀssib—a Department of Education school aide and former NYPD officer with a documented history of severe psychological issues—was arrested and charged with second-degree murder. Held without bail after arraignment, Mohᴀssib faces additional counts of tampering with physical evidence and criminal possession of a weapon. The case raises explosive questions about how a man flagged for mental instability ended up working with children near the crime scene.

Suarez had just finished her shift at the TD Bank on Shore Parkway. As was family tradition, she met her mother, changed into running gear, and headed out alone because her father—an MTA bus driver—was running late. Around 8 p.m., she spoke to him by phone, saying she was about half a mile away and would meet them soon. She never arrived. Her parents split up to search the poorly lit path. Her father discovered her collapsed under a tree near Bay 17th Street and Shore Parkway, bleeding heavily from multiple stab wounds to the neck. She had managed to run about 100 feet after the attack before collapsing. Rushed to NYU Langone Hospital-Brooklyn, she clung to life on a respirator for three days before succumbing to her injuries around November 2-3. The medical examiner confirmed the cause as a stab wound to the neck. Investigators described it as a random, unprovoked attack—no robbery or Sєxual ᴀssault, as her phone and jewelry remained with her.

Mohᴀssib, who lived nearby in Bensonhurst and worked as a subsтιтute school aide at P.S. 200 just blocks from the scene (and near the 62nd Precinct), was arrested on November 7. Surveillance video allegedly captured him walking toward the path before the attack and fleeing afterward. He reportedly returned home, discarded the knife and bloody clothes down a garbage chute, and tried to clean bloodstains from his apartment walls—stains that tested presumptively positive for blood. In statements to police, he claimed he carried a knife to the bike path because he believed “people were going to come and kill his family,” then blacked out and woke up covered in blood. Prosecutors cited his admissions and video evidence. He had even returned to work at the school on the Monday after the killing.

Mohᴀssib’s background is deeply troubling. He graduated the NYPD academy in 2022, served briefly in the Bronx, then resigned to join the Marines—only to be discharged for psychological reasons. When he tried to rejoin the NYPD, officials noted erratic behavior, denied him, and had him evaluated at Bellevue. In 2024, his mother and sister called 911 after he threatened to “chop them up”; he was again hospitalized. Despite this, he was hired by the DOE to work with students. Officials have suspended him and plan termination pending conviction. Local lawmakers are demanding a full probe into the hiring process. Both he and Suarez attended Brooklyn College around the same time, though no evidence they knew each other has emerged.

In a profound act of generosity that defined her life, Suarez—an organ donor—saved four people. LiveOnNY confirmed she donated her heart, both kidneys, liver, and pancreas to recipients aged 12 to 75 (three in New York, one in Florida). She also gave the “gift of sight” via cornea transplant. Her brother Yoni Aguilar praised her selfless nature, noting she loved K-pop, trained for races (including one planned for mid-November and aspiring to the NYC Marathon), and lived for family and running. Her mother Yasira called her “an angel,” devastated that “she just wanted to run.” A candlelight vigil and community memorials reflected the outpouring of grief.

This tragedy is a scathing indictment of systemic failures. How does someone with repeated psychiatric red flags, family threats, and failed law enforcement bids end up entrusted with schoolchildren and free to roam a public path with a knife? The random nature of the attack—on a popular waterfront greenway with views of the Verrazzano Bridge—terrifies runners and families citywide. Surveillance, forensics, and the suspect’s own words form a damning chain, yet justice demands full accountability in court. Suarez’s final gift of life stands in stark contrast to the alleged violence that ended hers. New Yorkers demand answers from the DOE and NYPD: how many more warnings will be ignored before the next preventable horror? Anyone with information should contact NYPD detectives. Katie Suarez’s light endures through those she saved—and in the fierce pursuit of justice for a young woman who simply loved to run.