NEW YORK ( TheStreet) -- Two tornadoes struck portions of Springfield, Mass., killing at least four people and injuring 40.

The tornadoes hit Massachusetts' third-largest city after 4 p.m. on Wednesday. The city is located about 90 miles from Boston.

Officials were investigating reports at least two more tornadoes touched down in and around the city, CNN reported.

"We are in triage right now," Springfield Mayor Domenic Sarno said. "We are in life-saving mode."

Massachusetts Gov. Deval Patrick declared a state of emergency. He also called up 1,000 National Guard members.

The storm system late Wednesday prompted tornado warnings along the Northeast.

-- Written by Joseph Woelfel

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