The police have recovered four revolvers from them. The joint operation was carried out by the Odisha and Telangana police.
The police claim that these persons were involved with the SIMI and were planning on carrying out their activities in Madhya Pradesh, Odisha, Telangana and Uttar Prradesh. They had rented a flat at the Qureshi Mohalla at Rourkela.
The police say that these persons were attempting to extort people and raise money for terror related activities.
The four persons who are residents of Madhya Pradesh were on the wanted list of the National Investigation Agency.
The NIA has been probing a case in which several members of the SIMI had indulged in bank robberies to raise money for terror related activities. A team of the NIA is likely to question them soon.