Cora Anderson Harvard Medical School’s “frog palace” at the college in Boston on April 3. LUCY LU/NYT Kseniia Petrova (left) with her parents, Dmitry and Irina, at their home in Kuchimo, Russia.

Harvard University researcher Kseniia Petrova is facing a pair of additional charges two weeks after a judge released her from Immigration and Customs Enforcement (ICE) detention.

Kseniia Petrova, a Russian-born Harvard scientist, has been charged with smuggling biological material into the United States — an escalation in a case that has already raised legal and civil ...

Harvard University researcher Kseniia Petrova is facing a pair of additional charges two weeks after a judge released her from Immigration and Customs Enforcement (ICE) detention.

Harvard University researcher Kseniia Petrova is facing a pair of additional charges two weeks after a judge released her from Immigration and Customs Enforcement (ICE) detention.

Harvard University researcher Kseniia Petrova is facing a pair of additional charges two weeks after a judge released her from Immigration and Customs Enforcement (ICE) detention.

Harvard University researcher Kseniia Petrova is facing a pair of additional charges two weeks after a judge released her from Immigration and Customs Enforcement (ICE) detention.

Harvard University researcher Kseniia Petrova is facing a pair of additional charges two weeks after a judge released her from Immigration and Customs Enforcement (ICE) detention.

Harvard University researcher Kseniia Petrova is facing a pair of additional charges two weeks after a judge released her from Immigration and Customs Enforcement (ICE) detention.