MANCHESTER, N.H. – A federal prosecutor said he will reconvene a grand jury in a case involving the jamming of Democratic phone lines in 2002, raising the question of whether more Republicans could be accused.

James Tobin of Bangor, Maine, a former New England director for the Republican National Committee, was previously indicted and is scheduled to go to trial in December.

Two others, a former state GOP executive director and a GOP consultant, have pleaded guilty and been sentenced to prison.

“The grand jury investigation is not complete. The grand jury will meet at least one additional time before the end of this year,” U.S. Department of Justice attorney Andrew Levchuk said.

The issue came up in state superior court on Wednesday. Levchuk asked Judge Philip Mangones to delay information-gathering in a lawsuit brought by state Democrats against the state Republican committee over the phone jamming.

Levchuk said that information-gathering could lead to revelations that would interfere with the criminal investigation.

Former state director Chuck McGee pleaded guilty and was sentenced to seven months in prison for arranging to bombard Democratic phone lines with electronically generated calls, jamming lines set up for voters seeking rides to the polls.

Allen Raymond, a GOP consultant from Virginia, also pleaded guilty and was sentenced to five months.

Prosecutors say Tobin orchestrated the phone jamming. Tobin has pleaded innocent.

The blizzard of more than 800 computer-generated calls lasted about 90 minutes on Nov. 5, 2002, as voters decided races for governor, U.S. senator and hundreds of other offices.

Attorneys for the Democrats have been fighting to get their lawsuit on track, arguing that the statute of limitations is running out and that federal investigators have been delaying the criminal case unnecessarily.

They also argue the phone-jamming case is part of something larger. “We believe there are other defendants out there,” said lawyer Paul Twomey.

Attorney for the state Republicans, Ovide Lamontagne, disagrees.

“Based on what I know, the whole phone-jamming scheme was concocted by one person, and that was Chuck McGee, who did this without authorization,” Lamontagne said.