Gunshots echo from Nairobi's besieged shopping mall as security forces monitor the ongoing standoff.

The conflict at Westgate shopping mall is now in its fourth day with smoke still rising from what officials described as burning mattresses.

On Saturday, militants from Somalia's al Shabaab Islamist group stormed the mall, killing at least 62 people and wounding 175.

Kenya Red Cross says a number of people are still unaccounted for and "several hostages" remain held up inside.

This woman is looking for her missing husband who was working at the Nakumatt supermarket inside the mall.

Another woman, who was consoling the grieving woman, says they don't know if he is dead or alive.

(SOUNDBITE) (Swahili) UNIDENTIFIED WOMAN (WHO WAS CONSOLING THE FIRST GRIEVING WOMAN) SAYING:

"Her husband works at Nakumatt, and he hasn't been found. So when we went to the crisis center, they told us they haven't got a list of those killed. We tell them: even if he is dead just let us know, so that at least we know that he is dead. But we are not getting anything so we are just stranded."

Officials from foreign embassies are also looking at the city's mortuary to identify their citizens who may have been killed in the attack.