An ex- New York City police officer who was kicked off the force after being deemed psychologically unfit has been arrested in the fatal stabbing of a Brooklyn jogger.

Sayed Mohassib, 27, was charged with second-degree murder, tampering with physical evidence and criminal possession of a weapon Saturday in the October 30 killing of Katie Suarez. The 28-year-old was fatally stabbed in the neck while running along the Shore Parkway Greenway near her home.

Mohassib, who was working as an elementary school aide at the time of his arrest, allegedly told investigators he had no memory of the attack but woke up covered in blood and holding a knife, according to police sources cited by the New York Post .

Investigators tracked Mohassib to his Bensonhurst home after surveillance footage allegedly showed him leaving the park around the time Suarez was attacked.…