Kseniya Petrova was returning to the US from a trip to France when officials revoked her visa and detained her

A Russian scientist from Harvard Medical School has been detained by US Immigration and Customs Enforcement, according to her friends and colleagues.

On Wednesday, Cora Anderson, a friend and colleague of Kseniya Petrova, shared the news of Petrova’s detention on Facebook, saying the Russian scientist arrived at Boston Logan international airport on 16 February from a trip to France when she was stopped by US authorities.