NAIROBI, Kenya (AP) - Kenyan's military said late Sunday it had rescued "most" of the remaining hostages held by al-Qaida-linked militants in an upscale Nairobi mall after launching a major operation to end a two-day standoff that had already killed 68 people.
The military assault, which began shortly before sundown, came as two helicopters circled the mall, with one skimming very close to the roof. A loud explosion rang out, far larger than any previous grenade blast or gunfire volley.
Kenyan police said on Twitter that a "MAJOR" assault had started to end the bloody siege.
Relatives help a woman at the Nairobi City Mortuary on Sunday after she identified the body of a victim of the Saturday attack at a mall in Kenya.
"This will end tonight. Our forces will prevail. Kenyans are standing firm against aggression, and we will win," Kenya's National Disaster Operation Centre said on Twitter.
Kenya Defence Forces later said it had rescued most hostages and had taken control of most of the mall.
Many of the rescued hostages - mostly adults - were suffering from dehydration, Col. Cyrus Oguna, a military spokesman, said. Oguna refused to release the number of hostages rescued or those still being held. He said some of the attackers had "most probably" been killed in the operation, which began in the morning and culminated in the evening.
The assault came about 30 hours after 10 to 15 al-Shabab extremists stormed the mall Saturday from two sides, throwing grenades and firing on civilians.
Loud exchanges of gunfire emanated from inside the four-story upscale mall throughout Sunday. Kenyan troops were seen carrying in at least two rocket propelled grenades. Al-Shabab militants reacted angrily to the helicopters on Twitter and warned that the Kenyan military action was endangering hostages.
Kenyan officials said they would do their utmost to save hostages' lives, but no officials could say precisely how many hostages were inside. Kenya's Red Cross said in a statement citing police that 49 people had been reported missing. Officials did not make an explicit link but that number could give an indication of the number of people held captive.
Kenya's Red Cross said the death toll on Sunday rose to 68 after nine bodies were recovered in a joint rescue mission.
A State Department spokeswoman condemned the "despicable massacre of innocent men, women and children." U.S. law enforcement, military and civilian personnel in Nairobi were providing advance and assistance as requested by Kenya, spokeswoman Marie Harf said.
Somalia's al-Qaida-linked rebel group, al-Shabab, claimed responsibility for the attack that specifically targeted non-Muslims. The attackers included some women. The Islamic extremist rebels said the attack was retribution for Kenyan forces' 2011 push into neighboring Somalia.