CTTC chief Md Asauduzzaman said three bombs, four remote controls, bomb-making materials and a large number of jihadi books were seized during the raid.
He also said that the members of a bomb disposal unit defused the bombs at the spot.
He said that Osama was an Imam of a local mosque and used to live in a house beside it with his family.
He operated his militant activities from the house, said the officer.
"Three days ago we arrested three members of Neo JMB from Mirpur. We got information about major Osama from them," added Asaduzzaman.
"We arrested him from nearby his home on Sunday evening and later raided his house at night," he said.
However, family members of the arrestee were not in the house during the raid.
"The house was used as a den of militants to make bombs. The bomb, found near a police box in Narayanganj's Siddhirganj on 17 May, was made in this house, CTTC additional deputy commissioner Ahmedul Islam said on Sunday.