New Delhi/IBNS: The Punjab Police Tuesday released several possible avatars or looks of fugitive Amritpal Singh, the Khalistani leader who is on the run for the last four days.

The police released the photos hoping that people could help spot him.

The cops released a set of seven pictures, where the 30-year-old radical preacher, who styles himself after the Sikh terrorist Jarnail Singh Bhindranwale, was seen in various guises and turbans.

A major crackdown was launched by police against Singh and members of his outfit Waris Punjab De on Saturday.

The Khalistani leader has been named "Accused Number one" in the new case.

The four close aides of Amritpal Singh have been charged under the stringent National Security Act (NSA), which allows the police to detain suspects in any prison across the country, said the report.

The Centre has registered a fresh FIR against Khalistani separatist leader Amritpal Singh, who has been declared "fugitive" by the Punjab Police, and is likely to take over the investigation as a case of terrorism, media reports said.

Singh and his supporters, armed with swords, knives and guns, raided a police station last month after one of the preacher's aides was arrested for alleged assault and attempted kidnapping.

Several policemen were injured in the brazen daytime raid on the outskirts of Amritsar, heaping pressure on authorities to act.