The U.N. has warned of escalating tensions in Senegal as the government intensifies its crackdown on protesters who’ve taken to the streets since last week denouncing President Macky Sall’s postponement of February’s election. Sall’s government has again cut off mobile internet access and banned a large mobilization that had been planned for Tuesday. This comes as Amnesty International reported Senegalese security forces recently killed at least three protesters, including a 16-year-old teen, in the capital Dakar.