SALT LAKE CITY -- Federal officials say they are worried about a spike in ecoterrorism in Utah after arson damaged a Brigham Young University building, the latest in a string of incidents in which authorities suspect extremists.
The letters ALF, thought to stand for the Animal Liberation Front, were spray-painted at several sites near Thursday's fire in Provo, 45 miles southeast of Salt Lake City. The ALF has not claimed responsibility, and did not immediately respond to an e-mail Friday from The Associated Press seeking comment.
The fire came after at least two other incidents in which animals were released and aquarium experiments were damaged at BYU in the last six weeks. The same initials were spray-painted at the horse barn.
The ALF's sister organization, the Earth Liberation Front, took responsibility last month for the $1.5 million arson fire at a suburban lumberyard.
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