LOS ANGELES — Two people remain jailed after being charged with attempting to extort Stevie Wonder in Los Angeles.

Alpha Lorenzo Walker and his girlfriend, Tamara Eileen Diaz are each charged with one count of extortion in connection with a plot to try to obtain money from the Grammy-winning musician.

The pair were arrested May 2 by detectives. District attorney’s spokeswoman Jane Robison says the pair pleaded not guilty on May 4.

Robison says Walker contacted Wonder’s representatives claiming to have embarrassing information about the musician.

Walker identifies himself as Wonder’s nephew and remains jailed without bail because of another court case. Diaz is being held on $95,000 bail.