WOBURN, Mass. (AP) — A Massachusetts court has issued an arrest warrant for state charges against the surviving Boston Marathon bombing suspect.

Dzhokhar Tsarnaev (joh-HAHR' tsahr-NEYE'-ehv) remains in custody after pleading not guilty to federal charges stemming from the April 15 explosions at the finish line that killed three people.

Massachusetts prosecutors say they sought the new warrant to preserve their right to pursue murder and other state charges.

Tsarnaev was indicted in June on state charges including murder in the death of a Massachusetts Institute of Technology police officer.

He was supposed to be arraigned Monday, but a prosecutor says U.S. marshals are unable to bring Tsarnaev to state court until his federal case concludes.

Tsarnaev's lawyer for the state charges was not in court and could not immediately be reached.

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