(AP) - Another defendant in one of New Jersey's most notorious murder cases has pleaded guilty.

Shahid Baskerville was one of six men and boys charged in theexecution-style slayings of three college friends in a Newarkschoolyard in 2007. A fourth victim was shot, stabbed and sexuallyassaulted but survived.

Baskerville was 15 at the time of the murders of Dashon Harvey,Iofemi Hightower and Terrance "T.J." Aeriel.

Baskerville was to have been tried as an adult. But he pleadedguilty Friday in state Superior Court to robbery, conspiracy andaggravated sexual contact in exchange for a 30-year prisonsentence. He's expected to testify against the remaining twodefendants.

Two of Baskerville's co-defendants have already been convictedof murder, and a third pleaded guilty last year.