There was an earthquake magnitude 4.6 in Tanzania

https://earthquake.usgs.gov/earthquakes/eventpage/us1000ayre#executive

The earthquake struck very close to UNESCO heritage site, where one can admire rock art–http://whc.unesco.org/en/list/1183

It’s the second in 8 days-http://www.africanpoliticsandpolicy.com/?p=9425