A city court on Wednesday remanded Burdwan blast accused Mohammad Rejaul Karim to eight days in police custody.
"The court has allowed our petition. We prayed for further police custody as this accused is very involved in the blast case," counsel for the National Investigation Agency Shyamal Ghosh told ANI.
Rejaul Karim will now be produced in court on January 28.
On January 10, the NIA had arrested Karim from a railway station in the Sahebganj district at the border of Jharkhand and West Bengal.
Karim is reportedly a member of banned terror outfit Jamat-ul-Mujahideen Bangladesh (JMB) and has been identified as one of the key terrorists behind the Burdwan blast.
Earlier in October 2014, a blast in the Burdwan region of West Bengal had killed two people and injured one person.