The United States has condemned the mistreatment of activists Boniface Mwangi and Agather Atuhaire in Tanzania.

In a statement on Friday, the US State Department's Bureau of African Affairs expressed concern over the treatment of the two East African activists and urged a thorough investigation into the alleged human rights abuses. "We call for an immediate and full investigation into the allegations of human rights abuses.

We urge all countries in the region to hold to account those responsible for violating human rights, including torture," the State Department wrote.

The US reaction comes days after Mwangi was detained in Tanzania while attempting to attend a court hearing for opposition leader Tundu Lissu, an incident that sparked widespread outrage on social media.