TAMPARULI: A 41-year-old female teacher was found dead with injuries at a house in Kampung Tenghilan here on Saturday.
Police detained her 47-year-old brother on the same day to assist in the murder investigation.
The suspect is believed to have a history of mental health issues and previously received treatment at a medical facility.
The case is being investigated under Section 302 of the Penal Code, which carries the death penalty or imprisonment of 30 to 40 years and whipping upon conviction.
Police urged the public not to speculate and to channel any information to Tuaran police hotline at 088-794313 or the nearest police station.