For the third time in three weeks, attorneys for the Commonwealth of Massachusetts and three men charged in connection with the killing of Woburn Police Officer John “Jack” Maguire  were in Middlesex County Superior Court today.

The next date in the pre-trial process will be Aug. 1. 

Arthur Cinelli, 50, of Newburyport, Scott Hanright, 19, of Wakefield and Kevin Dingwell, 41, of Wakefield were indicted on a series of charges related to the shooting death of Officer Maguire on Dec. 26 in superior court in April. All three men pleaded not guilty in court April 6.

Richard Doyle, Cinelli's attorney, requested that he be released from the case today at a 2 p.m. hearing Wednesday. 

"I was appointed April 6, and at the time, Arthur Cinelli was a federal prisoner in the state New Hampshire," said Doyle.

According to Doyle, about a month after his appointment, he received a letter from Cinelli stating "in no uncertain terms," that he did not want Doyle to represent him.

"His primary grievance is that I didn't make an effort to travel to New Hampshire," said Doyle, admitting that because he had not obtained "full discovery" for the case, he did not visit his client. 

Doyle told the court he called the New Hampshire prisoner, but Cinelli said the attorney "wasn't working hard enough."

Stephen Weymouth, a Boston lawyer, has been appointed Cinelli's new attorney and will be present at the Aug. 1 court date. 

According to Assistant District Attorney Marian Ryan, several dates were set for the pretrial process in the fall and winter, including dates in October, November and December. 

Arthur Cinelli, the brother of accused killer Dominic Cinelli, who authorities allege shot and killed Officer Maguire while the patrolman was responding to an armed robbery call, was arraigned on charges of conspiracy to commit masked armed robbery and accessory before the fact to masked armed robbery.  

Hanright and Dingwell were previously arraigned in Woburn District Court last year in connection with the case. Hanright was charged with murder, masked armed robbery (4 counts), armed assault with intent to rob (4 counts), stealing by confining (4 counts), assault and battery with a dangerous weapon on a person over the age of 60, assault and battery on a police officer, assault and battery, assault with a dangerous weapon (2 counts), possession of a firearm, possession of ammunition, discharging a firearm within 500 feet of a building, and conspiracy to commit masked armed robbery. 

Dingwell was indicted on accessory after the fact to robbery (4 counts), and willfully misleading a police officer (2 counts). 

Dominic Cinelli was shot and killed during the police response to the armed robbery.