Fugitive radical Sikh preacher Amritpal Singh's close aide Pappalpreet Singh was today arrested by the counter-intelligence unit of Punjab police from Punjab's Hoshiarpur. The two were constantly together after their dramatic escape from a police dragnet in Jalandhar. They had taken different routes to escape after reaching Hoshiarpur. The arrest was part of a joint operation of the Punjab Police and the special cell of the Delhi police.