The Navajeevan express train robbery case that has taken place at Kavali in Nellore District has seen development as the police found out that a person in the ranks of additional SP is involved in this crime. The police has arrested this person Samay John Rao who is the OSD in Markapur. Another three AR constiables who belonged to Prakasam District were arrested in the past . Watch the video for more details of this news . . . .