A creepy alleged crime out of DC this week, where a 43-year-old man was arrested and charged with collecting the blood of area residents. Khoa Hoang Nguyen paid them $30 each for their blood samples, police say, and a number of people went for it—neighbors said they often saw long lines of people waiting to enter an abandoned DC apartment where Nguyen allegedly collected the blood, NBC Washington reports. Nguyen told police he works for Boston Biosource, and the Massachusetts-based company says he collects blood for research, but police say he was not able to provide documentation proving he's licensed or certified to draw blood. They also say the blood was not being stored properly. He's been charged with practicing registered nursing without a license.
The Washington Post reports that a patrol officer happened upon the line of people waiting to have their blood taken Wednesday and overheard conversations about what they were doing. Police say many of them are "habitual substance abusers." It's not clear how many people had their blood drawn, but police say they found a ledger of Nguyen's with more than 200 names on it and that "large quantities" of blood were found. (Read more weird crimes stories.)