Kseniia Petrova was detained for four months after arrest with research samples, and feared deportation to Russia Federal prosecutors have dropped all criminal charges against a Russian scientist who spent four months in immigration detention after flying into Boston with frog embryos intended fo...
Source: [Guardian International](https://www.theguardian.com/us-news/2026/nov/04/kseniia-petrova-harvard-frog-embryos)