The U.S. Department of Agriculture has launched an investigation into Harvard University’s New England Primate Research Center after several suspicious deaths at the Southborough, Massachusetts, facility. The inquiry coincides with a series of articles published by The Boston Globe, which has uncovered a number of potential animal welfare violations at the center, including a dozen dehydrated squirrel monkeys found dead in their cages or euthanized because of poor health between 1999 and 2011. In several cases it appears that the animals were not given water or were unable to drink due to malfunctioning water lines. In one incident, a monkey’s tooth caught in her jacket, preventing her from drinking. Some of these animals were the subject of a 2014 Veterinary Pathology paper on the impact of dehydration on lab animals. The journal says it is now investigating this study. The primate center is set to close at the end of next month, though—according to the Globe—the university blames finances, not animal care problems.