Additional District Judge (ADJ) Girish Dixit sent the three accused from Uttar Pradesh-- Mohammad Danish (27) and Mohammad Atif Muzaffar (22) both from Kanpur, and Sayyed Meer Husain (19) from Kannauj district-- in police custody till March 23 after the state Anti Terrorism Squad (ATS) sought their remand for questioning.
The trio was yesterday arrested from MP's Hoshangabad district in connection with the train bomb blast.
The ATS prayed that it needed to grill the accused as according to initial investigation, they were linked to terror outfit ISIS and SIMI.
It also told the court that it needed to question the trio to know whether they were involved in acts of violence in the past and also want to get information about their further plans.
The ATS said that it has to gather evidence connected to commissioning of the act.
At least 10 people were injured, three of them seriously, in the IED blast in the train near Jabri station in Shajapur district of Madhya Pradesh yesterday.