A total of nine people were arrested Thursday in connection with the attack, during which five gunmen stormed the National Bardo Museum in Tunis. Twenty-three people were killed in the raid.
A major rally to mark the North African country's Independence Day is planned for Friday amid fears of follow-up attacks.
Just days remain until voters cast ballots in the African nation, but many foreign reporters are still unable to enter the country.
Wednesday's violence could imperil the "tolerant and rights-respecting society" that Tunisians seek, a human rights group says.
Tunisian authorities arrested nine people Thursday in connection with a terror attack at the National Bardo Museum in Tunis.
Didier Reynders' actions have raised questions about the country's lack of a national anti-racism plan.
The African Union said the attack at the Bardo Museum in Tunisia was "heinous and cowardly," and underlines the need for enhanced inter-African cooperation.
Australia has tried to convince Indonesia to grant clemency to two of its nationals sentenced to death for smuggling drugs.
China is becoming a significant player in arms exports and is now eyeing Africa for even further expansion.
The administration of Nigerian President Goodluck Jonathan failed to act soon enough, said former President Olusegun Obasanjo.
The evacuation follows the infection of an American health-care worker who is now being treated at a U.S. hospital.
A government minister rejected a rights group report that accused the Cameroon army of abuses.
Closer ties to the Islamic State group will likely mean more foreign fighters and media savvy for the Nigerian terrorists.
Without a new Gulfstream plane, the ministry says, trips to African nations, Australia and other destinations will be called off.
The Islamic State group has a strict application process for jihadist militias pledging allegiance.
Hundreds of thousands of people have fled to escape a militant group's violence, but space and food are in short supply.
Both groups stand to reap propaganda gains, but it's not clear Boko Haram will get the operational support it needs from ISIS.
Coalition forces entered Nigeria in a massive convoy that included tanks, cargo trucks and water tankers, a witness said.
The Nigerian militant organization declared its allegiance to the Islamic State group on Saturday.
Nobody has claimed responsibility for the three bombings that killed at least 47 people Saturday, but the Islamist militant group is the prime suspect.
Some local groups in Africa's most populous country are outperforming the nation's military in fighting terrorists.
An American missionary who was kidnapped in central Nigeria in February was safely released to authorities and church leaders on Friday, her Free Methodist Church said in a statement.