A suicide blast on the residence of DIG (Investigations) Nasir Wazir Khan in Quetta claimed the lives of one person and injured 9 others. Police and members of other law enforcement agencies have been targeted in a number of incidents. This is a dangerous trend, which is basically aimed at creating a sense of insecurity in the general public. However, the sacrifices laid down by police are appreciable and have saved the lives of many others. Unity is perhaps the most needed factor that can keep the nation together. ZULFIQAR HAIDER, Islamabad, April 7.