CUMBERLAND COUNTY, N.C. — Investigators say thefts at construction sites in Cumberland County are becoming a widespread problem.

Monday night, deputies found more stolen supplies and equipment after carrying out a search warrant at a storage facility on Hope Mills Road.

Deputies uncovered stolen windows, power tools and other constuction materials at two storage units during the raid.

The goods are in addition to an estimated $50,000 worth of items recovered from a home on Strathmore Drive in Fayetteville Friday.

Officials say both storage units and the home belong to 33-year-old Brian Donaldson. Deputies still have not located Donaldson.

"At some point during the week as the investigation continues we will make a more diligent effort to locate him," said Maj. Sam Pennica of the Cumberland County Sheriff's Office.

The thefts are taking a toll on local construction.

Catherine McKnight, of Rosewood Investments, says someone stole all the doors and windows from one site. She says thefts at the site are estimated at $10,000.

"It is frustrating. We lost eight weeks on this house because you can't get an inspection from the city without the windows in," she said.

Anyone with information on Donaldson's whereabouts should call the Cumberland County Sheriff's Office at (910) 323-1500.