Crime Branch, Kurla GRP and Kanjurmarg police were on their toes since the charred remains were recovered on Jan 16. Here's a graphical representation of the entire case and how the cops managed to crack it
After Esther’s charred remains were found on January 16, the Mumbai Police, Kurla GRP and Mumbai Crime Branch formed nine teams to crack the case. They found CCTV footage of a man who seemed to be carrying Esther’s bags and walking beside her. In footage captured earlier on the same day, the same man was seen drinking alcohol from a soft drink bottle.