ABUJA (Reuters) - Suspected members of the Islamist militant group Boko Haram killed six people in an attack on a commercial convoy being escorted by the army in Nigeria's northeastern state of Borno, the military said on Monday.

ATHENS, Sept 19 (Reuters) - Thousands of people fled from a fire at a migrant camp on Lesbos on Monday night, a police official on the Greek island said, noting that there had been noticeable tension among residents earlier in the evening, before the blaze started.

UNITED NATIONS, Sept 19 (Reuters) - United Nations Secretary-General Ban Ki-moon urged Congolese national security forces to exercise maximum restraint in their response to protests, his spokesman said on Monday, after deadly anti-government demonstrations against President Joseph Kabila.

NEW YORK, Sept 19 (Reuters) - The United States said it was disappointed that Democratic Republic of Congo did not announce an election calendar on Monday and threatened to impose additional sanctions on Congolese officials responsible for violence and repression.

LONDON (Thomson Reuters Foundation) - The United Nations launched an emergency $10.7 million appeal on Monday to help tens of thousands of people heading back to the Libyan city of Sirte amid military operations to oust Islamic State fighters from their last hideouts.

NEW YORK (Reuters) - Oil prices rose 1 percent on Monday after Venezuela hinted that OPEC members and other major oil producers could agree to a deal to freeze output, and as clashes in Libya disrupted attempts to restart crude exports from key ports.

ROME (Reuters) - Two Italian citizens have been kidnapped in Libya, Italy's foreign ministry said on Monday.

(Reuters) - Born into a musical family in South Africa, operatic soprano Pretty Yende grew up singing gospel music in church.

LONDON, Sept 19 (Thomson Reuters Foundation) - More than 175 world renowned artists including Sting, Robert Plant and Elvis Costello, have joined forces to back a song that supports greater action to address the global refugee crisis, campaign organizers said on Monday.