Egypt condemned "in the strongest terms" a suicide truck bombing that killed more than 50 people at a police school in Libya on Wednesday, the Egyptian foreign ministry said.

In an official press release on Thursday, the foreign ministry said that the "despicable acts of terrorism" in the city of Zliten affirm once again the urgency of supporting the legitimate security apparatuses in Libya, including the Libyan national army.

Egypt also stressed the urgency of lifting the ban on imports of weapons and ammunition needed to combat "the cancerous spread of terrorist organisations" that represents not only a critical threat to the Libyan state, but also to neighbouring countries.

Egypt also called on both Libyan sides to prioritise the interests of the country.

The statement also extended condolences to the victims' families, expressing Egypt's anticipation of cooperating with members of the presidential council and supporting efforts to form a national unity government as soon as possible according to the current political agreement.

The suicide attack is the deadliest militant attack to hit the strife-torn country since its 2011 revolution.

There was no immediate claim of responsibility for the attack but the Islamic State militant group, which has been growing in power in Libya, has carried out many suicide bombings in the country.