The mass grave found near Talheim in southern Germany dates to approximately 7000 years ago and contains the skeletal remains of 34 individuals from the Early Neolithic period, associated with what is known as the Linearbandkeramik culture. These individuals appear to have been the victims of a massacre, based on the presence of numerous lethal head wounds, several arrow wounds, and the placement of all of these individuals in the same burial pit. The burials are considered to likely represent members of the same community attacked and executed by another group. In this study we examine the remains from the mass grave at Talheim for information on migration and community structure using strontium isotope ratios in tooth enamel. In essence, strontium isotope ratios are signatures of different rock types. The food chain moves these atoms into the human skeleton from bedrock through water, soils, plants, and herbivores. Because human tooth enamel does not change after formation, it provides a stored signal of the strontium isotopes of the place of birth. If the strontium isotope ratio of the place of death is different, the individual under study must have moved from one geology to another during his or her lifetime. Isotopic provenancing shows that several of the individuals in the group at Talheim were born in a different geological location. We discuss the results of the analysis and its significance in terms of questions of migration and community structure in the Early Neolithic of prehistoric Europe.