By Mercy Oyaya

Hours after Twitter suspended an account that was used by Al Shabaab to claim responsibility for the Westgate attack, the group has created another account which it is using to issue further threats and claims.

The account @HSM_PressOffice updated in fluent English characteristic of previous accounts shut down by Twitter claims that the attackers have refused attempts by government of Kenya officials to negotiate with gunmen who have kept the mall under siege since Saturday afternoon.

Another handle @HSM_PRESS2 gives updates of what it claims to be live tweets from within Westgate.