Douglas County District Attorney Charles Branson issued a warning Friday about door-to-door scammers canvassing Lawrence.

In one case, Branson said a resident was approached by a man claiming to sell books as a fundraiser for a local soccer club and that she could purchase books for Children’s Mercy Hospital.

Branson said the salesman, who represented a group called First Class Sales, does not have a license to sell merchandise at Lawrence homes.

“If these folks show up at your door, politely turn them away and then immediately call the Lawrence Police Department with a physical description and if you see a vehicle, a license tag number,” Branson said in a news release.