A 23-year-old man of Rupiah village in Chisamba has allegedly raped and murdered his 105-year-old great grandmother after drinking an sex herbs.
Police in Mwansabombwe have apprehended the suspect identified as Martin Chikumbi pending investigations.
It is alleged he took sex boosters before raping and murdering his great grandmother aged 105, whose names have been withheld.
Police say the incident happened last week.