The Dhenkanal police have arrested a person for allegedly posing as a tehsildar and collecting fine from vehicle drivers on the National Highway near the College Bypass here. An associate of the accused has also been apprehended. According to police sources, the accused duo detained a truck driver on NH on Monday night and demanded money from him. In meantime, a patrolling team of police reached spot. On realising arrival of cops, the accused tried to escape but were nabbed by police. An SUV used by two was also seized by police. On basis of a complaint lodged by truck driver, police have registered a case while further investigation was underway.