WOBURN - A South End man who police said "reeked of alcoholic beverage" and had to be "begged" by rescue crews to provide the name of his dying former girlfriend in the wake of a car accident on Kilby Street, Friday night, is expected to be arraigned in Woburn District Court on Tuesday.

Sean M. Dyer, 18, Mount Pleasant Court, will be charged with motor vehicle homicide while operating under the influence of alcohol and reckless operation, according to Sgt. Walter Callahan, head of the Woburn Police Department's Traffic Division.

Dyer is currently free after posting $2,500 bail. He was supposed to be arraigned on Monday, but Woburn District Court is closed today due to the weekend snow storm.

He was arrested at his home about 15 hours after the crash that claimed the life of his former girlfriend, Cassandra Donovan, 17, of Montvale Road.

Callahan said the investigation has revealed that Dyer and Donovan were formerly in a dating relationship and at the time of the accident where what Dyer termed "good friends."

"At some point in the evening, (Donovan) called him to come and pick her up at the 7-Eleven (in Woburn Square)," said Callahan. "He said he doesn't remember anything after that."

According to police reports, Donovan was in the passenger seat of Dyer's vehicle when it struck a telephone pole on Kilby Street, shortly after 11 p.m. on Friday. Police later estimated the speed of Dyer's vehicle at 50 mph.

Officer Michael Daggett arrived to find Donovan badly injured and trapped in the vehicle, and Dyer in the driver's seat.

According to Daggett, Dyer told the officer to "help (Donovan), she's hurt," but then denied he was driving the vehicle.

Daggett reported Dyer emitted "a very strong odor of alcohol" and had to be led by the arm to a snow bank, where he apparently sat down.

More police and rescue crews from the Woburn and Winchester fire departments arrived at the scene and blocked off Kilby Street, which connects Winn Street and Main Street in Hammond Square.

According to officer John Maguire, Dyer "first said he knew nothing about the accident," re-affirmed he was not the driver and did not identify the passenger.

Four witnesses told police Dyer got out of the driver's seat, but offered no aid to Donovan, and did not called anyone on the cellular telephone in his possession.

As rescue crews worked frantically to extricate Donovan from the vehicle, "police and fire begged Dyer to give them the name of the female, but he would not," Maguire reported.

Police eventually obtained Dyer's cellular telephone, called the first number and reported "the person on the phone gave the identity of the victim and her address." Donovan's parents were then notified, Maguire reported.

Maguire reported Dyer "reeked of alcoholic beverage," was "unable to stand .. making a field sobriety test impossible."

An ambulance was called to transport Dyer to Massachusetts General Hospital, reportedly for treatment of a cut to his chin and a swollen right knee.

Officer Maguire reported Dyer had difficulty climbing into the ambulance and then became "combative," both on the way to and at the hospital, and was "still denying he was the driver and (claiming) he had no idea who the passenger was."

Donovan was also taken to Mass. General, where she was pronounced dead at approximately 2:30 a.m. on Saturday.

According to Callahan, Dyer was treated and released from Mass. General at about 8 a.m. on Saturday and arrested at his home about 3:15 p.m.

Callahan said at the time of his arrest Dyer acknowledged being behind the wheel of the car that crashed into the telephone pole and "seemed to be a little more" contrite.

A senior at Woburn Memorial High School, Donovan would have turned 18 on Jan. 28 and had just received a scholarship to attend college, Callahan said.

Callahan said the investigation would include further interviews of Dyer, to ascertain his whereabouts before the crash, and of Donovan's family members.

"Her father and I grew up together and served in the military," said Callahan. "I haven't been able to talk to him yet."

Funeral arrangements for Donovan are being handled by Lynch-Cantillon Funeral Home. Visiting hours will be from 3-8 p.m. on Wednesday at St. Charles Church, followed by funeral services on Thursday.

(For complete obituary information, please see page A14.)

At Woburn High, Donovan was a member of the student council and the Leo Club. She was a first degree brown belt in Jujitsu, and worked during the summers and part-time at Specialized Receivables in Wakefield.

"She was a good kid, a bright kid," said Woburn High Principal Robert Norton. "The summary of this is that she had a lot to live for and that got snuffed out on a Saturday night in the street.

"It's awful," added Norton. "She had some of the best things in her life in front of her and a lot going for herself in terms of her ability."

Norton said school officials will make provisions so students who knew Donovan can grieve.

"We're going to have a meeting tomorrow morning and we will take care of this in-house," said Norton. "We have plenty of guidance counselors and other help available, and I personally believe in these situations you're a lot better off when you have people who know the kids."

Donovan is the second Woburn teenager within the past seven months to die behind the wheel of a car in a tragic accident.

In July, James Lawton, 18, of Hallmark Drive, died when the car he was driving was involved in a crash on Route 95 in Newbury.

(Daily Times Chronicle staff reporter Patrick Blais contributed to this report.)