Islamabad, Ramadan 1, 1432, Aug 1, 2011, SPA - At least 12 people were killed in Pakistan's Karachi city during the last twenty-four hours, due to the bloody wave of violence plaguing the security of the city for months. An official source of Pakistani Police said that they were killed in different parts of the city, pointing out that violence is still continuing in areas of tension between rival armed gangs based on ethnic and political (affiliations). Meanwhile, the official source said that the Police managed to arrest seven terrorists during a security operation in Karachi city and seized from their possession a quantity of weapons and explosives. --SPA 11:01 LOCAL TIME 08:01 GMT www.spa.gov.sa/915067