Some 75% of Indonesia's capital, Jakarta, is now affected by massive floods, local officials say.

The officials, from the city's flood information centre, say the death toll from the flooding has reached 25 - mostly by drowning or electrocution.

Some 340,000 people have been made homeless, and the officials say there is little prospect of an early improvement in the situation.

There are fears that polluted water could be spreading disease.

"As of today [Monday], 75% of Jakarta remains flooded," Anwar Arifin, from Jakarta's flood information centre, was quoted as saying by the Associated Press news agency.