Wuuuuuuuiiiii!!!!
Very sad!! May he RIP.
If that wife did this she is the worst Ibilisi Shetani in the whole world but she is also very stupid. Unaweza aje ficha the body in your own compound???
On the other hand I like movies and I can see other possibilities with this case. What if the killer is that Muiruri guy who claims to be the friend? It would be a perfect crime. He knows that the wife was cruel to the guy and they were divorcing so there is motive on her side. The body is found in her compound.
Think about it, the police must investigate this thoroughly and should not assume this is a straightforward case.