In a crackdown on criminals in western Uttar Pradesh, three wanted law breakers were killed and six others arrested in seven separate encounters in four districts, in which six policemen were also injured, police claimed on Sunday. The encounters took place in Saharanpur, Ghaziabad, Gautam Buddha Nagar and Muzaffarnagar districts in past 24 hours in which three wanted criminals were killed and seven others arrested, DIG (Law and Order) Praveen Kumar said. Six policemen were also injured in the encounters, he told reporters on Sunday. Watch News Nation's special show 'Nation Reporter' to stay updated with all the latest news all over the world.