Two gangsters, suspected to be among the shooters in singer Sidhu Moose Wala's murder, were killed in a shootout with the police near Amritsar today. Three policemen were injured too. While Jagroop Singh Roopa was killed first, the other suspect, Manpreet Singh alias Mannu Kussa, continued to fire for about an hour before he was killed around 4 pm, in a shootout that lasted more than four hours, officials said.