Police and Rangers launched operations in different areas of Karachi and nabbed 20 suspects including three wanted offenders on Thursday. In the first incident, Rangers raided in Abbas Town situated at Abu al Hasan road and arrested several criminals. In other incident, on getting secret information, police launched target operation in the area of Orangi Town at Frontier Colony, Kanwari Colony and Metrol and arrested 20 suspects including three wanted criminals. Police registered the case and started interrogation from them.