A New York man is accused of shooting his sister in the head with a crossbow as part of a plot to kill her over several arguments they had about their Long Island home’s thermostat temperature, according to prosecutors.
Samy Sedhom, of Lawrence, has been indicted on charges including attempted murder and assault in connection with the February 13 attack on his sister, the Nassau County District Attorney’s Office said in a Thursday, April 2, news release.
Sedhom, 21, had allegedly planned to kill his sister for several weeks, since December 2025, according to prosecutors.
In a statement, Nassau County District Attorney Anne T. Donnelly described Sedhom’s actions as “violent and calculated.”
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“Sedhom allegedly tracked his sister and lain in wait before brutally attacking her with a crossbow in a clear attempt to take her life,” Donnelly said. “An attack that was born out of revenge for an ongoing dispute about the temperature in their home and came within inches of being fatal.”
At his arraignment on April 2, Sedhom pleaded not guilty to all the charges against him, court records viewed by Us Weekly show.
His defense attorney did not immediately return a request for comment from Us.
Over the course of the alleged, repeated disagreements about the temperature of their house, prosecutors said Sedhom bought a “high-performance Barnett Whitetail Hunter Crossbow,” three hunting arrows and a GPS device, which he placed inside his sister’s car.
According to the district attorney’s office, Sedhom’s indictment details how he allegedly shot his sister with the crossbow after she got home from the gym on February 13.
When Sedhom’s sister came home, she saw her brother’s car “parked across the street” before she parked inside of a detached garage at their home, prosecutors said.
While she was typing in a code to shut the garage door, Sedhom appeared with the crossbow, according to prosecutors.
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He fired at his sister, hitting her in the head, causing her serious bleeding and injuries to her “right ear, right cheek, and face,” the district attorney’s office said.
She was taken to a nearby hospital for emergency surgery, where she got treatment to “stop the bleeding” and to “close the approximately six-inch-long laceration to her face,” according to prosecutors.
Following the attack, Sedhom is accused of getting rid of the crossbow at an intersection in his town, prosecutors said. Nassau County police officers later found the weapon.
That evening, investigators searched Sedhom’s bedroom and found a black Katana sword, a laptop and a crossbow box, without a crossbow inside, according to the district attorney’s office.
He was arrested the next day, on February 14, prosecutors said.
Sedhom’s attorney, Stephen Mullkoff, has argued that Sedhom had no plans to kill or injure his sister, NBC New York reported.
“My client intended to scare his sister and never intended to hurt her in any way,” Mullkoff said.
If Sedhom is found guilty of the charges against him, he would face up to 25 years in prison, according to prosecutors. His next court appearance is scheduled for April 30.
“Home should be a safe haven, not a place of fear and bloodshed,” Donnelly said.
