A Long Beach teenager accused of strangling a young woman on a Rockville Centre footbridge also sexually abused his victim, according to an indictment unsealed Wednesday in Nassau County Court.

There were no further details in the indictment -- or from prosecutors or the attorney representing the accused killer, Maxwell Sherman, 18.

Garden City defense attorney William Petrillo told Judge Meryl Berkowitz Wednesday that he would defer for now on requesting bail.

Petrillo entered not guilty pleas on Sherman's behalf to second-degree murder and first-degree sexual abuse. Outside the Mineola courtroom, the mother of the victim -- Lauren Daverin-Gresham, 18, of Lynbrook -- cried as she stopped briefly to speak with reporters.

"She's not coming home, so there's nothing else I can say," said Kathleen Daverin, 49, of Lynbrook. "I would just like the kid to look me straight in the face and tell my why he did this to my daughter."

Assistant District Attorney Everett Witherell said he was turning over some of the evidence in the case to Petrillo, and the defense attorney acknowledged receipt of it.

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Sherman wore a dark suit, blue shirt and red tie as he stood handcuffed in court.

Daverin's partially clothed and bloodied body was found by a pair of acquaintances about 10 p.m. on Aug. 22 on the Mill Pond footbridge over Merrick Road, police said.

The next day, Sherman told a WCBS-TV reporter that he had been at the scene about 7 p.m. the night of the killing but had not seen anything suspicious. He said a group of young people were "just chillin' " nearby.

Sherman was arrested on Aug. 24. Neither police nor prosecutors have revealed what led detectives to him. A motive in the killing has also not been disclosed.