Police filed at least seven cases with different police stations in four districts since Wednesday night, accusing hundreds of BNP-Jamaat men of planning subversive activities, exploding crude bombs and vandalising vehicles.
The cases followed the BNP's announcement of a seven-day demonstration protesting the verdict in the August 21 grenade attack cases, which sentenced 19 people, including two ex-BNP ministers, to death and jailed acting BNP Chairman Tarique Rahman and 18 others for life.
Law enforcers also arrested at least 39 leaders and activists of the BNP and Jamaat-e-Islami.
Of the seven cases, three were lodged with Fatullah, Siddhirganj and Bandar police stations in Narayanganj yesterday, accusing 440 named and scores of unnamed BNP leaders and activists. The accused include former BNP lawmaker Giasuddin Ahmed, according to police.
Besides, at least 10 BNP men were arrested from different places in the district.
In Mymensingh, police filed a case against 32 leaders and activists of Chhatra Dal, student wing of the BNP, for planning subversive activities, said Mahmudul Islam, officer-in-charge of Kotwali Police Station.
None was arrested in connection with the case.
Meanwhile, police picked up AKM Rafiqul Islam, president of BNP's east zone unit in Saudi Arabia, from his ancestral home in Nandail upazila five days after he returned from the kingdom, said his family members and party sources.
Rafiqul was arrested on charge of planning subversive activities, said Kamrul Islam Miah, officer-in-charge of Nandail Police Station.
In Chuadanga, nine Jamaat-Shibir men were picked up by police on Wednesday. They include Jamaat district unit Ameer Anwarul Haq Malik and General Secretary Ruhul Amin.
Besides, 19 Jamaat men were arrested while they were holding a secret meeting to plot subversive activities in Joypurhat, said Sirajul Islam, officer-in-charge of Joypurhat Sadar Police Station.