The cause of the massive fire at SPS Technologies in Abington Township , Pennsylvania, that took nearly a week to contain in February was ruled an accident, officials announced Friday.

The more than four-alarm blaze broke out on Feb. 17, causing evacuation notices and a shelter-in-place order to be issued. Crews from several surrounding counties, including Bucks, Delaware, Chester and Lehigh counties, helped battle the blaze at the Jenkintown manufacturing company. The Abington Township Fire Marshal's Office said the blaze was finally extinguished on Feb. 22 , adding that it took an estimated 114 hours to get the blaze under control.

Through their investigation, the fire marshal's office discovered that the fire began in the area of the compressed air system infrastructure w

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