Teenagers detained and allegedly tortured in Sudan must be released, says Amnesty

The pair, arrested in connection with the killing of a police officer during pro-democracy protests, are reportedly being denied visits and medical help

Amnesty International has called for the release of two teenagers who have been detained and allegedly tortured in Sudan in connection with the killing of a police officer during pro-democracy protests in Khartoum.

Mohamed Adam, known as Tupac, 17, and Mohamed al-Fateh, 18, have been held without charge since 15 January.