Kenyans on Twitter living in parts of Mombasa reported earth tremors around 8.15pm on Wednesday night.
Similar tremors were reportedly felt in parts of Dar Es Salaam around the same time.
Some Tweeps reported rattles in their house while others said it made chandeliers move.
Others said they were awoken from their beds by the tremors.
American Earthquakes which reports on Earthquakes across the globe reported an Earthquake of 4.9 magnitude.
It was registered at 60kilometers east of Lodwar and had a depth of 10 kilometers.
Some residents from the area reported that there homes showed cracks.