Acting on a tip-off, the police detained two persons and recovered the explosive substances from the duo before arresting them, a senior police official said here.
"We had the information about people smuggling explosives into the districts. We are interrogating them and trying to know where from they got the explosives," he said.
Meanwhile, six persons were detained from the district's Raghunathpur Police Station area for running an illegal "workshop" inside a house for manufacturing parts of small arms, he said.