The suspect in a series of stabbings is transported on a gurney into an ambulance by medical personnel at the Silver City Galleria mall in Taunton, Mass., Tuesday, May 10, 2016. Multiple people have been stabbed in separate attacks at the mall and a home in Massachusetts. (Charles Winokoor/The Daily Gazette via AP) MANDATORY CREDIT
The suspect in a series of stabbings is transported on a gurney into an ambulance by medical personnel at the Silver City Galleria mall in Taunton, Mass., Tuesday, May 10, 2016. Multiple people have been stabbed in separate attacks at the mall and a home in Massachusetts. (Charles Winokoor/The Daily Gazette via AP) MANDATORY CREDIT Credit: Charles Winokoor

TAUNTON (AP) — Two people were killed and four others wounded in stabbing attacks at a home and a shopping mall in Massachusetts before an off-duty law enforcement officer shot and killed the suspect, authorities said.

Bristol County District Attorney Thomas M. Quinn III said late Tuesday that Arthur Darosa, 28, of Taunton, crashed a car outside a home in the city, walked inside and stabbed an 80-year-old woman and another woman. The 80-year-old was taken to a hospital, where she later died. The other woman was being treated for life-threatening injuries.

Darosa then drove to the Silver City Galleria mall and crashed a car through the front of a Macy’s store, Quinn said. He assaulted multiple people inside the store before running to a Bertucci’s restaurant and stabbing four people, including a 56-year-old man who later died. An off-duty deputy sheriff intervened at the restaurant and shot Darosa dead, Quinn said.

A motive for the attacks remains under investigation, but state police said they have found no evidence of a connection to terrorism.

“There is no continuing threat to the public,” said Dave Procopio, a state police spokesman.

Taunton is about 40 miles south of Boston.

Silver City Galleria is a regional mall offering 130 specialty stores, sit-down restaurants and a movie theater.