Four people charged in connection with the Sept. 6 shooting of Woburn Police Officer Robert DeNapoli were arraigned in Woburn Superior Court this morning.

Antonio Matos and Hector Baez-Cruz were held on $500,000 cash bail after the Superior Court hearing. Erianiss Murillo and Allegra Martinez were held on $250,000.

Matos, 25, of Boston, was captured by police on Sept. 6 and had been hospitalized for injuries sustained after the robbery. He was arraigned from his hospital bed Oct. 12 by a Woburn District Court judge; the arraignment was postponed due to his medical condition.

Baez-Cruz, 21, also of Boston, was arraigned for his role in the crime Sept. 16 and plead not guilty in district court. He was held on $500,000 cash bail.

Murillo, a 17-year-old Dorchester teen, was held on $250,000 cash bail, or a $2 million bond, after a brief arraignment in Woburn District Court Nov. 23.

Martinez, 18, of Providence, RI, the fourth suspect in the Officer DeNapoli shooting, was held on $250,000 cash bail or $2.5 million bond less than two months ago. Martinez, 18, was arraigned in Woburn District Court, just hours after Murillo.

The four defendants were indicted Dec. 21 by a Middlesex grand jury.

All four were arraigned Thursday on the following charges:

• masked armed robbery (3 counts),
• conspiracy to commit masked armed robbery,
• armed assault with intent to murder (11 counts),
• misleading police,
• possession of a firearm,
• possession of a loaded firearm,
• possession of a firearm with a defaced serial number,
• possession of ammunition,
• larceny over $250,
• assault and battery with a dangerous weapon (4 counts),
• discharging a firearm within 500 feet of a building (2 counts),
• mayhem (2 counts),
• assault and battery with a dangerous weapon causing serious bodily injury,
• assault and battery on a public employee,
• malicious destruction of property (4 counts), and
• assault with a dangerous weapon. 

Murillo and Martinez were additionally indicted on the charge of accessory after the fact to masked armed robbery.

On Sept. 6, Officer DeNapoli responded to a report of an armed robbery at the Musto Jewelers store at Four Corners. He was shot multiple times by Matos, said authorities.

For complete coverage of the shooting, as well as the investigation, click here.