NEW YORK - An assailant stabbed at least four people Tuesday in the US state of Massachusetts before an off-duty security officer shot the suspect, police said.
Massachusetts State Police and Taunton Police responded to the tragedy at a shopping mall.
Shortly after 7:00 pm (2300 GMT), the suspect drove his car into the glass entrance at a Macy's department store, at the Silver City Galleria, state police said.
Two people were stabbed at a local home before the suspect crashed his car into the store facade. He then stabbed two more people at a mall restaurant.
"At this point none of the victims are deceased although some injuries may be life-threatening," police said.
"It is possible that the assailant was involved in an earlier motor vehicle crash on Myrick Street prior to the stabbings there." No motive for the attack was immediately known. The suspect's condition was not clear.
"I heard shots and saw cops loading AR-15s and I ran for my life," one witness told CBS affiliate WBZ.
Another said shots rang out in Bertucci's restaurant at the shopping centre.