HOUSTON (KTRK) -- The David Weekley Homes construction site on Dorothy Street in Houston Heights, has been the recent target of thieves, workers say.Surveillance video shows a white pickup truck backing onto the job site and leaving with a load of wooden beams a short time later. Workers say this truck has shown up six times over the past two weeks.Building material worth thousands of dollars has been taken, including $7,000 in windows alone.Workers say each time the group shows up in this truck, but the people loading material appear to be different.Deann Browne lives on the other side of the complex. She says she saw police investigating on Monday night."Wondering what was going on so I finally asked one of the police officers, 'Is this something we need to be worried about?' He said it's just a burglary," Browne said.Browne said while she's not worried for her own safety, she wants these people caught."I know there are some elements of this neighborhood that are not good but overall I think it's pretty safe."Workers say the thieves have set back the construction.If you recognize the truck in this surveillance video, or have any information, call police.