An international rights group has published "horrifying" accounts of exploitation and sexual abuse — including gang rape — of migrants attempting to cross the Mediterranean from Libya to Europe.

In a Friday report titled "Libya is full of cruelty," Amnesty International collects testimonies of 90 migrants, including 15 women, interviewed in reception centers in Italy and Sicily.

Sexual abuse is so widespread some women take contraceptives before their sea crossing.

Magdelena Mughrabi of Amnesty says, "from being abducted, incarcerated underground for months and sexually abused by members of armed groups, to being beaten, exploited or shot at by people smugglers, traffickers or criminal gangs — refugees and migrants have described in harrowing detail the horrors they were forced to endure in Libya."

Libya is home to some 250,000 refugees and migrants.