Indonesia's anti-graft agency Friday detained the former chairman of the ruling party over a $120 million corruption case, in a move that could further damage the president just months before elections.

The Corruption Eradication Commission (KPK) detained Anas Urbaningrum after four hours of questioning for allegedly receiving "gifts or a promise of gifts" in a case linked to the construction of a sports center near Jakarta, commission spokesman Johan Budi said.

Nigeria's military on Friday confirmed that it was to release 167 people who were detained as part of counter-insurgency operations against Boko Haram militants in three northeast states.

Defense spokesman Chris Olukolade said the suspects were to be freed after a directive from the presidency following their recommendation for release in December last year.

Thousands of residents in the Central African Republic's capital Bangui gathered in the streets Friday in a show of joy at the resignation of interim president Michel Djotodia.

Agence France Presse reporters in the city saw crowds in the main avenues and squares singing and yelling happily "It's over! It's over!".

South Sudan rebel leader Riek Machar confirmed Friday that rebel forces had lost control of the key northern oil town of Bentiu, but vowed his fighters would continue their battle against the government.

"We withdrew from Bentiu, but it was to avoid fighting in the streets and save civilian lives. We fight on, we will continue the battle," Machar told Agence France Presse by satellite telephone from an undisclosed location in the country.

The U.N. refugee agency warned Friday that fighting in South Sudan could drive more than half a million people from their homes, doubling the number of those affected by April.

"In South Sudan, the situation has continued to deteriorate. Fighting has spread to seven of the country's 10 states," said Adrian Edwards, spokesman for the U.N. High Commissioner for Refugees.

Dutch prosecutors suspect an Amsterdam man abused hundreds of children, some as young as 12, by getting them to perform sexual acts in front of their webcams, a spokesman said Friday.

"The man is suspected of enticing minors to perform sexual acts in front of their webcams while he pretended to be a girl," said Evert Boerstra of the public prosecutor's office in Amsterdam.

A Spanish judge on Friday banned a mass demonstration planned to support jailed members of armed Basque separatist movement ETA, as the group pushed for concessions from authorities.

The treatment of ETA's jailed members is one of the most sensitive issues in a standoff between the Spanish and French governments on one side and western Europe's last major armed secessionist movement on the other.

The U.N. refugee agency Friday warned that Australia could be breaking international law, amid reports that it pushed back to Indonesia boats carrying asylum-seekers.

Adrian Edwards, spokesman for the U.N. high commissioner for refugees, said the agency wanted an explanation after the reports that the Australian navy forced boats back, as well as plans to buy more vessels to bolster such operations.

Rival teams from South Sudan's government and opposition reviewed a ceasefire proposal from mediators Friday, with the issue of detainees remaining a sticking point in peace talks.

The proposal from mediators called on both sides to "cease all military action aimed at each other" and to "agree to immediately cease all military operations and freeze their forces," according to a draft seen by AFP.

Former oil tycoon Mikhail Khodorkovsky, who was freed by Moscow last month after a decade in jail, has traveled from Switzerland to Israel on a private visit, his spokesman said Friday.

Khodorkovsky, who was in Switzerland with his family, "is on a short private visit" in Israel, his spokesman David Krikler told AFP, confirming news reports.