JOSHUA SILLS/Arizona Daily Wildcat The weekend of Aug. 15, two separate vandalism incidents occurred at Phi Gamma Delta's yet unfinished fraternity house. Broken windows were evidence of the damage.

Intruders responsible for two incidents of vandalism and arson that took place two weekends ago at the construction site of a campus fraternity house are still at large, leaving UAPD investigators looking for leads.

The arsonists, whose identities are unknown, entered the Phi Gamma Delta fraternity (FIJI) house construction site sometime on the night of Aug. 15, or the early morning of Aug. 16, where they shattered four windows and three glass blocks and burned the blueprints for the building's sprinkler system.

The intruders found the blueprints, placed them inside a fire extinguisher cutout where there was exposed wood, and then set fire to them.

"We were all taken aback that someone would try to burn the building down," said Craig Arbon, the fraternity's alumni representative for design and construction.

The vandalism was discovered by construction workers the morning of Aug. 16 and reported to UAPD at around 5:45 a.m.

The second incident occurred the same night when unidentified persons entered the house and set fire to tape around the doorframes. The tape was there for painting purposes, Arbon said.

The $4 million dollar construction project is due to be completed in February, but these incidents may have set total completion of construction back by up to two weeks, said project manager Brad Lloyd, vice president of Lloyd Construction Company, Inc.

The total cost of the damage is unclear, but the windows alone will cost several thousand dollars to replace, Lloyd said.

"We just fix what was broken and go on. Unfortunately, that is part of life," he said.

The arsonists scaled a six-foot chain link fence to enter the courtyard where they gained access to the house.

"I don't have a lot of hope that we will actually catch the people that did it," Arbon said. "It is like a faceless criminal, you don't know who to be angry at."

The group has increased security and surveillance on the premises, in response to the incidents.

"I don't think they will be able to do it again," Arbon said.

Arbon also said that the night of Aug. 15 someone smashed a car windshield in front of the Alpha Chi Omega sorority house at 1775 E. First St., directly across the street from the FIJI house.

He said that a third instance of vandalism occurred on the same night at the Sigma Kappa sorority house, 1125 N. Vine Ave.

Arbon believes that the intruders did not fully consider the penalties for their actions.

An arson conviction can mean serious jail time, he added.

"This was the work of someone who was probably good and drunk and maybe vindictive," Arbon said.