TRIPOLI -- The Libyan Coast Guard rescued more than 300 illegal immigrants and brought them back to the capital Tripoli, the United Nations Higher Commission of Refugees (UNHCR) said Monday.

"Today at dawn, Libyan Coast Guard returned to Tripoli 315 refugees and migrants after being intercepted/rescued at sea aboard several boats," the UNHCR tweeted.

"Two persons lost their lives and their bodies were recovered. UNHCR partner IRC (International Rescue Committee) was on site to provide urgent medical care to all survivors," the UNHCR said.

At least five boats carrying nearly 400 people attempted to flee Libya during the previous 48 hours, the International Organization for Migration (IOM) said earlier Monday.

The IOM reiterated call for ending returns of rescued migrants to Libya and establishing a safe alternative disembarkation mechanism.