The Kenyan military has confirmed the identities of four men implicated in an attack on a shopping mall in Nairobi two weeks ago.

Military spokesman Maj. Emmanuel Chirchir said on Saturday that the attackers were Abu Baara al-Sudani, Omar Nabhan, Khattab al-kene and Umayr, the Associated Press reported.

"I confirm those are the names of the terrorists," he said.

A newly released video shows all the four men casually strolling through the building during the four-day-long hostage crisis.

Kenyan authorities had initially estimated that 10 to 15 gunmen had attacked the mall, but Kirchir said only four militants were seen on the closed circuit television footage from the Westgate mall, adding that he does not believe any others were involved.

On Friday, Kenya’s Red Cross said 18 people were missing from the mall attack.

Rescue workers are still searching through the debris of the partly Israeli-owned mall, which was destroyed in the attack by gunmen in which at least 67 people were killed.

According to reports, the dead included three British nationals, two French women, two Canadian citizens including a diplomat, a Chinese woman, two Indians, a Ghanaian poet, a South Korean, a South African, and a Dutch woman.

On September 25, the leader of Somalia’s al-Shabab, Ahmed Godane, confirmed that the group was behind the attack on the mall, saying the raid was in retaliation for the Kenyan military’s invasion of southern Somalia in October 2011.

"Take your troops out or prepare for a long-lasting war, blood, destruction and evacuation," Godane said.

Kenya has more than 4,000 army soldiers in southern Somalia, where they have been battling the al-Shabab fighters since 2011.

The Kenyan troops are part of the African Union Mission in Somalia (AMISOM) that gets training and equipment from the United States.

Somalia has not had an effective central government since 1991, when warlords overthrew former dictator Mohamed Siad Barre.