Zimbabwe's President Emmerson Mnangagwa has been tweeting about ongoing relief efforts in the devastated south-eastern part of the country following Cyclone Idai.

He hailed Zimbabweans for helping in the relief efforts especially in the town of Chimanimani, which was devastated by the storm.

"We have set up a 19 point plan to help the affected communities, intensifying the search for the missing and ensuring food relief, free medical services, temporary shelter and clean water while working to prevent disease outbreaks, restore social services and relocate settlements," he tweeted.

Officials say at least 259 people have died and 217 people are missing in Zimbabwe. About 200,000 others have been affected.

Mr Mnangagwa has declared Saturday and Sunday as days of national mourning:

"I have declared Saturday & Sunday days of national mourning to honour those we have lost over the past week and support the injured, displaced, missing and grieving. Let the prayers and support of a loving nation bring comfort to those in need"