Latest from the BBC:
"Tacloban is totally destroyed. Some people are losing their minds from hunger or from losing their families," high school teacher Andrew Pomeda told AFP news agency.
"People are becoming violent. They are looting business establishments, the malls, just to find food, rice and milk... I am afraid that in one week, people will be killing from hunger."
The BBC's Rupert Wingfield-Hayes reports that the scene in Tacloban is one of utter devastation.
Our correspondent says hundreds of people are at the airport, itself badly damaged, trying to get on a flight out of the city.
Warren