A BNP leader was injured in a gunfight allegedly between police and the members of his group at Katpur Beel in Shyamnagar upazila on Friday night.
The injured was identified as Akter Faruk, 27, son of Ashraful Haq Sardar of Kashimari union of the upazila.
Secretary of BNP Kashimari union's ward 5 unit in the upazila, Akter Faruk is accused in 16 cases, said police.
Three policemen, including a sub-inspector, were injured during the gunfight, they said.
Aminul Islam, officer in-charge of Shyamnagar Police Station, said a team of police raided the area when a gang of criminals, including Faruk, was holding a secret meeting at about 8:30pm.
Sensing the presence of the police team, the gang members opened fire at law enforcers, prompting them to return the fire which left Faruk bullet-hit and three policemen injured.
The gun batted continued for about half an hour, he said.
Later, the police team arrested Faruk, who was hit by bullets in his legs, while his accomplices managed to flee the scene.
Police also recovered a pipe gun and three bullets from the spot.
Faruk was undergoing treatment in Shyamnagar health complex under police custody.
He is also wanted by police for attacking a mobile court magistrate, the OC added.
However, Faruk's father claimed that police picked up his son from near his house at about 8.00pm and later fired in his legs, taking him to a lonely spot near Katpur Beel.
Shyamnagar upazila's Kashimari union unit BNP secretary Oliar Rahman told this correspondent that Faruk was recently expelled from the party on charge of breaking party discipline.