Suffolk County District Attorney Daniel F. Conley today announced the convictions of three kidnappers for an incident that nearly killed an Allston man in a botched ransom plot during the summer of 2008.

A Suffolk Superior Court jury today found JOSEPH CALDWELL (D.O.B. 12/5/82) of Mattapan and DOMONIC CAMPBELL (D.O.B. 4/15/88) of Cambridge guilty of kidnapping with intent to commit extortion, aggravated assault and battery with a dangerous weapon, and attempted murder. Jurors also found JILLIAN JACQUES (D.O.B. 3/31/85) of Allston guilty of kidnapping and aggravated assault and battery with a dangerous weapon but acquitted her of attempted murder.

Jurors did not reach verdicts on a fourth co-defendant, TYON FEASTER (D.O.B. 7/31/84) of Cambridge, who is charged with the same offenses. Presiding Judge Frank Gaziano instructed jurors to resume their deliberations with regard to that defendant.

Gaziano had earlier ruled as a matter of law that the evidence did not support an arson conviction against any of the defendants, finding that an element of that offense – charring to the structure of the building – had not been proven.

During the two-week trial, senior Suffolk prosecutors elicited testimony to prove that Jacques arranged to buy a small amount of marijuana from the 24-year-old victim on June 1, 2008, but insisted that the transaction take place in her Glenville Avenue apartment instead of the lobby of her building as she had in the past.

Evidence showed that Caldwell and Campbell were lying in wait for the victim. They took his cell phone and tied him to a chair. They demanded that he procure large quantities of marijuana for them – a feat the victim said he could not accomplish.

In the hours that followed, the victim was repeatedly beaten and threatened by his assailants, who began to demand cash when it became clear the victim had no access to more drugs. In phone calls to the victim’s brother, they promised to shoot the victim in the head if they were not given $5,000.

The victim’s brother raised a little over $4,000 and, after notifying Boston Police, provided it to two women at Dudley Station who had been sent by the kidnappers. Those women were apprehended; further investigation showed that they were unaware of their true role in the ransom scheme.

Jacques left the apartment that afternoon to go to work. At about 11:00 that evening, members of the Boston Fire Department responded to an alarm at her building. On gaining access to her apartment, they found that a pillow and several rolls of toilet paper had been set on fire before sprinklers doused most of the flames.

Boston firefighters also found the victim tied to a chair. He had been severely beaten and was bleeding from his eyes. Injuries to the man’s face were so severe that he was not immediately able to view photo arrays because his eyes were swollen shut.

Assistant District Attorney Jeremy Bucci, chief of Conley’s Narcotics Unit, tried the case with Assistant District Attorney Joseph Ditkoff, deputy chief legal counsel for the Suffolk DA’s office. Caldwell, Campbell, Feaster, and Jacques were represented by attorneys Tonomey Coleman, Robert Griffin, Pamela Harris Daley, and Joseph Hennessey, respectively. The defendants convicted today will be sentenced at 2:00 on May 5.