WOODINVILLE, Washington (AP) - Four large model homes burned at a multimillion-dollar development in a suburb north of Seattle. An official says a sign found at the scene had the initials of the Earth Liberation Front.

Fire official Rick Eastman says the blazes are suspicious because they were set in multiple places in separate houses. No injuries have been reported.

Eastman says a sign reading ELF was left at the scene of the fires north of Woodinville. He says some of the houses were still under construction.

The ELF or Earth Liberation Front has claimed responsibility for other arsons in the Northwest. A woman is on trial in Tacoma for one of those fires that was at the University of Washington in 2001.