A month after Yale senior Suzanne N. Jovin was found stabbed to death, police have stepped up the search for her killer.

New Haven police have enlisted the help of a nationally-known forensics expert and posted fliers in the upscale neighborhood where Jovin was murdered. She was found on Dec. 4 with multiple stab wounds to the head, neck and chest.

The posters have two photos of Jovin, and ask people to contact the police with any information they may have.

Police will not say if a murder weapon has been found, but they said that the wounds are indicative of a straight blade knife.

It will be weeks before the results of forensic tests, including blood from the crime scene, come back, said the police.

They have not named a suspect nor do they have any strong possibilities. However, the police said they suspect Jovin knew her killer. A man and woman were heard arguing just before her body was found at 9:58 that evening just a mile from campus.

The New Haven police have enlisted the help of Henry Lee, a well-known forensic expert, and, in a rare move, the FBI.

Lee is Connecticut's commissioner of public safety, and is nationally-known for his forensic work on the Nicole Brown Simpson-Ron Goldman case and the Jon-Benet Ramsey case. He has been asked to examine the clothes Jovin wore that night to help them find her murderer.

Thomas P. Conroy, Yale's acting director of public affairs said, "everyone at Yale is hopeful that they can bring whoever is responsible to justice. We have justifiable faith and hope for their success."

--Associated Press reports were used in the reporting of this story.