Archaeologists in Peru say they have discovered the jawbone of a fetus among the remains of a sacrificed woman in a pre-Inca tomb, suggesting the Lambayeque culture practiced the atypical sacrifice of pregnant women and their children.

The remains of the woman and unborn child were found in a tomb with three other sacrificed women and several sacrificial llamas, lead archaeologist Carlos Wester La Torre told The Associated Press.

In all, Wester La Torre's team reported finding the remains of seven women in two tombs at the Chotuna Chornancap archaeological site, each showing signs of having been cut at the throat.