An East Harlem man pleaded not guilty yesterday to a grisly crime: using an electrical cord and frying pan to strangle and bludgeon to death a woman he claims was a prostitute, then abandoning her body in a suitcase on East 114th Street.

Career con Hassan Malik, 55, was busted last month after video surfaced of a man wheeling the suitcase that served as a temporary coffin for Betty Williams, 28.