Amritpal Singh case: As the hunt to arrest Khalistan sympathiser Amritpal Singh is underway, the Punjab government on Tuesday reportedly issued lookout notice and alerted airports. Meanwhile, the radical preacher's uncle and driver have surrendered before the police in Jalandhar. Punjab Police arrested four people on Tuesday for allegedly helping radical preacher Amritpal Singh escape their net and released seven photographs of the Khalistan sympathiser, including some in which he is not wearing a turban, to seek public help to nab the fugitive. The preacher managed to give police a slip after changing his vehicle on Saturday when police had launched a crackdown against him and his outfit 'Waris Punjab De'. He was initially in his Mercedes vehicle but later switched to Brezza SUV during the police action. In a new photo that appeared on social media, Amritpal Singh could be seen riding pillion on a bike wearing a pink turban and black goggles, suggesting that he tried to change his appearance to get away from the eyes of police. A CCTV footage also showed him on the bike. Another CCTV footage of the Jalandhar toll plaza, which appeared on social media on Tuesday, showed Amritpal Singh escaping in the SUV.