THE STANDARD NAIROBI A couple and their son detained for three days to allow probe into fatal assault of their daughter. [Courtesy] A couple suspected to have beaten their 15-year-old daughter to death have been detained for three days to allow police complete investigations. It was a sad day for Frankline Ntwiga Marangu, his wife Benedetta Mbeni Muthoka and son Ian Ntwiga Marangu as they faced double tragedy of being in the dock over allegations of murder while still mourning the death of their daughter Christine Makena. Nairobi Senior Resident Magistrate Jane Kamau ruled that it was a unique situation that the family of three had found themselves in and declined to give the prosecution seven days they had requested for to have them detained to complete investigations.