The well-known president of the Friends of the Tisbury Council on Aging remained in critical condition this week at Massachusetts General Hospital in Boston, following a recent accident when she was hit by a car while walking in Vineyard Haven.

Virginia Iverson was transported to the Boston hospital following the accident early in the afternoon on Oct. 31.

State police are investigating the accident and have released only scant information while the investigation remains ongoing.

They have confirmed that the accident took place at 1:42 p.m. on Halloween day and involved one car and a pedestrian, at 280 State Road in Vineyard Haven. The car was a 2012 Toyota Highlander driven by a 74-year-old male from Oak Bluffs who has not been identified, state police said.

Trooper Paul Sullivan, a spokesman for state police media relations, said Thursday that no further information will be available until the investigation is complete.

Meanwhile, leaders at the council on aging said patrons of the senior center inquire daily about Ms. Iverson.

Bruce Doten, a director of the Tisbury council on aging, said Ms. Iverson has been a tireless volunteer who installed a commemorative garden at the senior center practically by herself.

“She’s loved for things like that,” he said.

He also said it was ironic Ms. Iverson was hurt while walking in Vineyard Haven, a favorite hobby of hers.

“She travels around the Island walking and on bus transportation. She’s known for that. It’s just so sad,” Mr. Doten said.