Suffolk prosecutors want to try Jordan Dasch alongside fellow "Patchogue 7" defendant Jeffrey Conroy next week, when Conroy goes on trial in Riverhead for the November 2008 death of Ecuadorean immigrant Marcelo Lucero.

Prosecutors had hoped to try Conroy, 19, of Medford, along with Kevin Shea, 18, of Medford. But after Shea pleaded guilty Friday to charges that he assaulted Lucero and three other Hispanic men, prosecutors asked State Supreme Court Justice Robert Doyle to approve a joint trial of Conroy and Dasch.

Assistant District Attorney Megan O'Donnell said Monday the dual trial would "avoid two trials" and witnesses would not have to testify twice.

If Doyle approves, the trial would be held with separate juries for Conroy and Dasch, the district attorney's office said.

Conroy, who prosecutors say stabbed Lucero to death, is charged with second-degree murder and first-degree manslaughter. Dasch, 19, of Medford, is charged with first-degree gang assault and fourth-degree conspiracy.

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Three teenagers have pleaded guilty to assaulting Lucero and agreed to testify against the other four defendants.

Doyle has not yet ruled on a motion by defense attorneys to hold separate trials for the four remaining defendants. Doyle also has not ruled on the admissibility of statements Dasch made to police after Lucero was killed in Patchogue on Nov. 8, 2008.

Attorneys for Conroy and Dasch could not be immediately reached for comment Monday.