The Israeli humanitarian group IsraAid, in coordination with Israel's Ambassador to West Africa Paul Hirschson, purchased and sent food to Sierra Leone after the country was hit by deadly mudslides earlier this week.
Emergency response teams have raced to dig out survivors and dispose of bodies but the central morgue is overwhelmed and many bodies are feared trapped under mud and rubble.
Government officials have said that people can claim their relatives' bodies or choose to have the government bury them.
"I am very disturbed by this national tragedy and with a heavy heart, let me extend profound condolences to the bereaved families", Koroma said on Monday. "We need urgent support now", he said.
Initial Red Cross estimates said as many as 3,000 people were left homeless and the figure is expected to rise.
General William Lacy Swing, director of the UN's migration agency International Organisation for Migration - which released the first-response funds - said: "IOM [International Organization for Migration] is ready to work with Sierra Leone's government in any capacity it can, to respond to this bad event".
Mabinty Sesay's family had gone to Regent for an all-night prayer session when the church was buried in the mudslide. "I've spoken with other family members and we have made a decision to allow the government to go ahead with dignified burial process". She is now searching for her baby and has not seen her husband since the disaster.
Sierra Leone authorities are dealing with the aftermath of a hilltop collapsing in Freetown.
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"There is basic need for food, water, sanitation equipment and medical assistance".
The country is not yet halfway through the rainy season.
Deforestation, a lack of urban planning and vulnerability to climate change had all played a part, it said.
The UN said it was evaluating humanitarian needs in the country and that "contingency plans are being put in place to mitigate any potential outbreak of waterborne diseases such as cholera, typhoid and diarrhea", according to spokesman Stephane Dujarric. Witnesses described a particularly-hard hit area in the Regent district, saying roads became "churning rivers of mud".
The bodies that have been recovered will begin to be buried in the next 48 hours, said Sulaiman Parker, environmental protection officer for the Freetown City Council.
"Unidentified corpses will be given dignified burial at Waterloo between Aug 17 and Aug 18". The graves would be specially marked for future identification, he added.
Victor Foh, Vice President of Sierra Leone, confirmed to the UK Telegraph that "hundreds have probably died" in the mudslide.
One particularly hard-hit area was the suburb of Regent, located east of Freetown.