"We're not here to feed the attackers with pastries but to finish and punish them," Kenyan police Inspector General David Kimaiyo warned on Twitter.
Even away from the mall, the country faced intensified security. At various locations, more than 10 people were taken into custody for questioning about the attack, including at least four people from an airport.
Authorities released a few details about the death toll: Most of the dead were apparently Kenyans, but the slain included six British citizens, two French nationals, two Indians and two Canadians, including a diplomat, their governments said.
Among the 175 people wounded were five Americans, the State Department said.
In response to the unconfirmed claim that the terrorists included Americans, U.S. authorities reviewed intelligence reports for evidence of a U.S. connection to the attack, law enforcement sources said. But a senior U.S. official said the claim wasn't looking too solid.
Final Day? Tuesday
As the world anxiously awaited a conclusion to the terrorists' siege of the mall, President Uhuru Kenyatta announced forces killed five terrorists at the mall and arrested 11 others for possible ties to the attack.
"We have ashamed and defeated our attackers," the president said.
That announcement, however, didn't answer important questions: were there foreign nationals among the terrorists, what happened to the hostages and what's the status of the 65 people that the Red Cross says are unaccounted for?
Identification of some victims provided glimpses into the terrorists' alleged barbarity: A pregnant Dutch woman expecting her first child in October was killed, along with her husband architect who was building hospitals and clinics for free. Another woman, who was seven months pregnant, was slain. A boy, age 8, was dead, along with his father.
The material condition of the besieged mall evoked a war scene: three floors of the mall collapsed during the government's counter-offensive against the terrorists, trapping bodies inside, the president said.
Those trapped bodied include terrorists, Kenyatta said.
"Our attackers wish to destroy the essential character of our society. They failed," Kenyatta said. "Kenya endures."