Phalombe Police Spokesperson Innocent Moses said Chimwala had been defiling the girl since she was 7 year old.
The Police Publicist said Chimwala, who married the victim’s sister, is said to have been defiling the victim who is an orphan for several times while threatening to chase her out of his house if she would reveal to her sister.
The girl is said to have reported disclosed the matter to her sister after noticing signs of pregnancy.
Meanwhile the Police in the district says they are working hand in hand with traditional chiefs and members of the communities to eradicate all forms of violence against children.
Chimwala who hails from Gwirima village in the area of Traditional Authority Nkhulambe in the district is expected to appear in court soon to answer a defilement charge which is contrary to Section 138 (1) of the Penal code.