Egypt's President Abdel-Fattah El-Sisi has sent five thousand tonnes of food supplies to Egyptians stranded on the Libyan-Tunisian border, according to the Egyptian army's official Facebook page.

The supplies were transported by airplanes that were used to evacuate Egyptians.

Tensions have been high on the Tunisian-Libyan border after two Egyptians were killed Thursday when Libyan guards opened fire on hundreds of Egyptians who were trying to enter Tunisia to escape the ongoing unrest in Libya.

Tunisian authorities have said many of the Egyptians do not have visas or required documents, according to TAP state news agency. Around 350 Egyptians were allowed to cross into Tunisia Wednesday, TAP said.

The International Organisation for Migration estimates that 330,000 to 1.5 million Egyptians worked in Libya up until the period of current unrest, which began following the NATO-backed uprising that toppled Muammar Gaddafi in 2011. The number of Egyptian expats has since dwindled, although it is not clear how many Egyptians remain in the country.

Libya has been embroiled in turmoil since Gaddafi's ouster opened the way for militias to increase their power. An ongoing fight between rival militias over control of the capital's international airport has left dozens killed and hundreds injured.

At least 110 have been killed in the capital since the latest bout of violence began two weeks ago, leading to the cancellation of most international flights.