species identification - What is this marmot-like animal (Tigray, Ethiopia)?

I was searching what are the animals I frequently saw in the north of Ethiopia. I took some bad quality pictures.

For me it looked like a large squirrel, local people called it a rat, and on the internet I find rock hyraxes are quite frequent in the region, but they appear not to have a long tail like the animals I saw, and they don't have the white lateral line