The elder brother of Raja Raghuvanshi, an Indore-based transport businessman murdered during his honeymoon in Meghalaya, on Friday demanded a narco analysis test on prime accused Sonam and Raj Kushwaha to uncover the "entire truth" behind the sensational case.

Five people, including Raja Raghuvanshi's wife Sonam (25) and her alleged lover Kushwaha (20), have been arrested for their alleged involvement in the murder of Raja Raghuvanshi (29) in the north-eastern state last month. All of them are currently in the Meghalaya police's custody and an SIT is probing the case.

However, Sonam is accused of getting her husband killed during their honeymoon with the help of Kushwaha and three contract killers, a case which has sent shockwaves across the country.