Colin Dwyer

Updated at 4:06 p.m. ET

An "ongoing attack" has roiled a luxury resort near Mali's capital, Bamako, the U.S. State Department confirmed Sunday. "Malian forces are responding" to the attack at Le Campement Kangaba, the agency tweeted, warning U.S. citizens to avoid the area.

Iraqi forces have opened what they hope will be the final assault to retake Mosul, pushing into the the crowded, narrow lanes of the area still occupied by ISIS. The operation, launched at dawn Sunday after a barrage of airstrikes from the U.S.-led coalition, aims to retake Mosul's Old City from the militant group.

Updated at 11 a.m. ET

A wildfire swept through central Portugal on Saturday, killing more than 60 people and injuring dozens more in what the country's prime minister called "the biggest tragedy of human life that we have known in years."

The deadly blaze, which was just one of dozens that broke out Saturday, ravaged the heavily wooded municipality of Pedrogão Grande, roughly 100 miles from Lisbon. According to officials, most of the victims died in their cars along a single road as they attempted to escape.

Days after a blaze tore through Grenfell Tower in London, the death toll continues to rise: City police announced Saturday that 58 people "are missing and we assumed likely to have died."

Previously, the Metropolitan Police had confirmed 30 people had been killed in the inferno; the announcement Saturday nearly doubles that number.

For the second time in a week, a man in an Afghan army uniform opened fire on U.S. service members at a base in Afghanistan. The attack Saturday at Camp Shaheen left seven American soldiers wounded, according to officials with the NATO-led mission in the country.

Officials at the northern base tell Jennifer Glasse, who reported from Kabul for our Newscast unit, that the shooter was killed. At least one Afghan soldier was also wounded in the attack. A tweet from the NATO-led Operation Resolute Support described it as an "insider attack."

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