a mystery after nearly a month-long investigation by New York City Police.

Det. Mike Pisano said this week inquiries would continue until there were some answers.

"I'm still working on it,'' he said. "Right now we are checking out some (finger) prints found in the car. They are good prints and we hope to make an identification.

Det. Pisano said no arrests had been made in the case, nor had anyone been brought in for questioning.

Mr. Douglas, 38, who was in New Jersey on business, was found face down in the backseat of his rental car in Harlem in New York City in the early hours of March 4. He was shot four times and his wallet, car keys and passport were missing.