Italian prosecutors are investigating the deaths of 26 Nigerian women of which most of them are teenagers whose bodies were recovered at sea.
There are suspicions that they may have been sexually abused and murdered as they attempted to cross the Mediterranean.
A Spanish warship, Cantabria, docked there carrying 375 migrants and the dead women, following several rescues.
Twenty-three of the dead women had been on a rubber boat with 64 other people.
Italian media report that the women’s bodies are being kept in a refrigerated section of the warship. Most of them were aged 14-18.
Most of the 375 survivors brought to Salerno were sub-Saharan Africans, from Nigeria, Senegal, Ghana, The Gambia and Sudan, the daily La Repubblica reports.
There were also some Libyan men and women on board.
People-smuggling gangs charge each migrant about $6,000 (£4,578) to get to Italy, $4,000 of which is for the trans-Saharan journey to Libya, according to the Italian aid group L’Abbraccio.
Many migrants have reported violence, including torture and sexual abuse, by the gangs.