Kenyan Security Forces Continue Search For Al Shabab Militants in Nairobi Mall

Authorities say 62 people have been killed

(Reuters) - Somalia's al Shabaab Islamist group said on Tuesday there were "countless dead bodies" in a Kenyan shopping mall as security forces searched for militants still holed up in the complex after a weekend attack that authorities say killed 62 people.

The al Qaeda-linked attackers are believed by Western sources to include Americans and possibly a British woman who may be the widow of a suicide bomber who took part in an attack in London in 2005. Al Shabaab in Somalia rejected suggestions that foreigners were involved.

A burst of gunfire in the early morning broke hours of calm on the fourth day since the militants stormed into the Westgate center in Nairobi during a busy Saturday lunchtime, spraying bullets and lobbing grenades.