SALT LAKE CITY, Utah — Investigators are searching for the cause of a fire that engulfed an under-construction apartment project in Lehi, Utah, south of Salt Lake City. The 304-unit multi-family complex, called Alta Vista, broke ground earlier this year. …Flames at a four-story wood-framed building were first reported at 10:17 am Sunday, Nov. 9, by the project’s on-site security guard. The fire quickly spread to the rest of the building, most of which eventually collapsed, according to a statement from the city of Lehi. …A statement from Wood Partners read: “The project was under construction and did not have any residents. There were no fatalities in the fire…. We are working closely with local officials through the investigation, cleanup and recovery processes.” …Fire department officials say it may take several days before they can determine the blaze’s cause and point of origin.