After increasing reports of Khartoum residents being provoked in their neighbourhoods and homes by both paramilitary fighters and men out of uniform, the opposition Sudanese Professionals Association warned people to beware of the military's "miserable tricks".
It claimed groups are trying to trick people, using announcements from local mosques, into removing barricades and to come out onto the streets.
The SPA said the protesters should follow a strategy of building barricades on roads then abandoning them instead of confronting the paramilitary forces.
A muezzin (who usually calls to prayer) says a message broadcast for people to carry arms was not made by anyone from the mosque