Hedge funds and banks are not ready to give even temporary debt relief to one of the poorest countries in the world.
The Zambian government claims the move is to protect the traditional communications industry while activists fear the decision amounts to an attempt to stifle freedom of communication.
Officials say the incident happened at Black Mountain in the town of Kitwe, where artisanal miners have taken to re-mining the waste site for copper and other metals.
Police arrested 55 people in Lusaka after residents rioted over a curfew and ban on street vending imposed to control a cholera outbreak, the Zambian government says.
The Zambian government says the emergency measures are necessary to curb "politically motivated" arson attacks but opposition parties see the move as an effort by President Edgar Lungu to tighten his grip on power.
President Edgar Lungu accuses the opposition of orchestrating the fire, which gutted the main market in Zambia's capital Lusaka, to make the country "ungovernable".
Zambia's opposition leader, Hakainde Hichilema says that the president did not win the election legally.
Opposition leader Hakainde Hichilema alleges some electoral officials are colluding in favour of the governing party.
President Edgar Lungu and main rival Hakainde Hichilema will battle it out at the election polls on Thursday as Zambia votes for their new president.
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