Anger erupts as 1,700 still missing in Ecuador quake

People complain help has been slow to arrive in certain regions

The death toll from Ecuador's earthquake was set to rise sharply after authorities warned that 1,700 people were still missing and anger gripped families of victims trapped in the rubble.

Three days after the powerful 7.8-magnitude quake struck Ecuador's Pacific coast in a zone popular with tourists, nearly 500 people are known to have died, the government said on Tuesday.