In its ongoing drive against criminals, the Karachi police have nabbed 22 accused from various areas of the metropolitan during the past 24 hours. A statement on Friday said that three gangs of alleged criminals were also busted. An encounter also took place in the Gulistan-e-Jauhar area, it was further stated. Around 10 pistols, three snatched mobile phones and cash were also recovered. Police have registered cases against the accused and started their investigation.