New York ? Police Commissioner Raymond Kelly said Sunday authorities would seek an indictment against a bouncer with a long rap sheet, the prime suspect in last month’s gruesome slaying of a graduate student.

Blood found on the plastic ties used to bind Imette St. Guillen has been matched to a bouncer at the bar where she was last seen alive, the New York Police Department commissioner said.

Kelly said authorities would take that match and other evidence to a grand jury to get an indictment against Darryl Littlejohn. He didn’t give a date for when the grand jury would get the case.

Littlejohn, in custody at a Rikers Island jail on a parole violation, had not been arrested in connection with St. Guillen’s death as of Sunday.

Littlejohn was a bouncer at The Falls bar, where the manager has told police he ordered him to escort the woman out when she stayed sipping a drink past the 4 a.m. closing time.

Sometime during the next 17 hours, the student at John Jay College of Criminal Justice in Manhattan was raped, strangled and suffocated.