Those confirmed to have died by the Libyan Red Crescent so far were all passengers in a boat carrying 26 Bangladeshi nationals.
The humanitarian group did not say whether there were further fatalities among passengers in a second boat which sank while carrying around 70 mostly Sudanese people.
The boats were using the central Mediterranean route between North Africa and Italy, which is the "deadliest known migration route in the world" according to the UN International Organization for Migration (IOM).