Who Is Sayed Mohassib? Ex-NYPD officer, NYC school aide charged in Brooklyn deadly stabbing

NYC school aide arrested for killing runner raises serious questions Questions are being raised about what the NYC Department of Education knew about Sayed Mohassib before hiring him to work with children. Mohassib was arrested for allegedly murdering Katie Suarez in Brooklyn, and has a history of concerning behavior. FOX 5 NY's Teresa Priolo reports. The Brief Sayed Mohassib, an ex-NYPD officer and former NYC teacher's aide, is charged with murder in the fatal stabbing of 28-year-old Katie Suarez in Brooklyn. Mohassib pleaded not guilty to second degree murder, tampering with evidence and criminal possession of a weapon in connection with the Oct. 30 attack along the Shore Parkway Greenway. Suarez, a Brooklyn College graduate, was a registered organ donor whose organs have saved four lives, according to LiveOnNY. NEW YORK - A 27-year-old former NYPD officer and former New York City public school aide is charged with murder in the fatal stabbing of a runner in Brooklyn. NYC teacher's aide charged with murder The backstory: Sayed Mohassib pleaded not guilty over the weekend in Kings County Criminal Court to second-degree murder, tampering with physical evidence, and criminal possession of a weapon in the death of 28-year-old Katie Suarez. Investigators said 28-year-old Katie Suarez was running eastbound along the path near Shore Parkway and Bay 17th Street around 8 p.m. when an attacker stabbed her on both sides of her neck. According to a criminal complaint, Suarez was out running along the Shore Parkway Greenway in Bath Beach on Oct. 30 when she was attacked. When she failed to meet up with her parents, her father searched the path and found her with multiple stab wounds to the neck. Suarez was hospitalized in critical condition and died three days later. Surveillance footage captured Mohassib walking toward the waterfront running trail prior to the assault and running away shortly afterward, prosecutors said. Additional cameras recorded him entering his residence, appearing roughly 15 minutes later dressed only in underwear, and discarding items down a garbage chute. "How Was This Missed?" Outrage at NYC school where Brooklyn murder suspect worked Outraged and concerned parents at P.S. 200 in Brooklyn are demanding answers after learning that a teacher’s aide at the elementary school was arrested and charged in the fatal stabbing of 28-year-old runner Katie Suarez in Bath Beach. FOX 5 NY's Jessica Formoso has the latest on Newsroom Live. Investigators said Mohassib admitted during questioning that he went to the path armed with a knife out of fear that people were coming to kill his family. While he denied stabbing Suarez, he allegedly told detectives he sat on a bench near the Verrazzano-Narrows Bridge covered in blood before running home to dispose of his bloody clothes and the weapon, according to court documents. Bloodstains were later found in his apartment, detectives saud. Suspect enlisted in NYPD, Marines Dig deeper: The NYPD confirmed Mohassib served as an officer for just over a month in October 2022 before enlisting in the U.S. Marines. He served less than a month in the military before being discharged on psychological and fitness grounds, officials said. Sayed Mohassib, suspect in the stabbing death of jogger Katie Suarez, is pictured in police custody outside the NYPD 62nd Precinct station house in Brooklyn, New York City on November 7, 2026. (Theodore Parisienne / New York Daily News via Getty Imag Expand When Mohassib sought reinstatement with the NYPD in January 2023, police officials denied his application after supervisors said they observed erratic behavior and took him directly to a hospital for evaluation. Somehow, authorities said, he later landed a job with the New York City Department of Education as a teacher’s aide at P.S. 200 in Brooklyn. Mamdani orders ‘full review,' suspect fired by NYC Public Schools What they're saying: Mayor Zohran Mamdani said he ordered his team to conduct "a full review" in response to Mohassib's arrest. "Nothing is more paramount than the safety of our students," Mamdani said. "We are also making counseling and support available to all the students and families at the school." The Department of Education confirmed late Monday it terminated Mohassib, after a spokesperson initially said he was suspended pending the outcome of the criminal case. "This individual's employment has been terminated. NYCPS maintains a robust background and review process for employment in schools. We are conducting a review to explore any areas where this can be strengthened and ensure no stone is left unturned when it comes to student safety," the DOE said in a statement to FOX 5 NY . Victim's organs donated The other side: Suarez, a bank teller and Brooklyn College graduate, was a registered organ donor whose organs have saved four lives since her death, according to LiveOnNY. Her heart, kidneys, liver, pancreas and corneas were donated to patients ranging in age from 12 to 75. Featured article Katie Suarez, runner stabbed and killed in Brooklyn, saves 4 lives as organ donor Katie Suarez, the woman fatally stabbed while on a run in Brooklyn, saved four lives through organ donation. "This is an unimaginable loss for any parent and family.  That Katie thought of others in being a registered donor is a powerful testament to her generosity and will ensure that she will live on through these gifts of life," said LiveOnNY President and CEO Leonard Achan. "LiveOnNY is humbled and honored to be the stewards of these precious gifts of life so that Katie’s legacy and others may live on. We extend our deepest condolences to her parents, her brother and extended family and friends. Our thoughts and prayers remain with them during this very difficult time." What's next: Mohassib is scheduled to return to court Tuesday. The Source: This story was written with information and statements from the NYPD's Office of the Deputy Commissioner, Public Information (DCPI). Brooklyn Crime and Public Safety New York City