The Police Reforms Working Group Kenya on Wednesday condemned the arrest and incommunicado detention of Kenyan activist Boniface Mwangi and Ugandan lawyer Agather Atuhaire by Tanzanian authorities.

The two were detained while observing court proceedings involving Tanzanian opposition leader Tundu Lissu. "This arrest is a blatant attack on the rights of human rights defenders and journalists," said the Police Reforms Working Group Kenya in a statement on May 21.

The group added that the two have been denied legal representation, contact with their families and access to consular services, saying this violates international human rights laws.

The lobby group urged Tanzanian authorities to release Mwangi and Atuhaire unconditionally and called for an independent investigation into the arrests.