UNIVERSITY PARK, Pa. --

An early-morning fire at a former Penn State fraternity house caused significant damage, officials said.

Crews were called to the Phi Delta Theta house at around 3 a.m. Thursday.

The fire started in an upstairs room. No one was injured, but water from the sprinkler system damaged the house.

Building inspectors ordered that the house be evacuated until further notice.

Last year, Penn State filed a lawsuit in an attempt to have the house sold to the university.