A joint security force arrested five people suspected of involvement in the killing of seven drivers of vehicles northeast of Baquba yesterday.A security source told the reporter of NINA today that a joint security force carried out raids and searches operations included the Zeham and Esawid villages within the villages of Arab Jabour north of Muqdadiyah resulted in the arrest of five people suspected of involvement in the killing of seven drivers of vehicles northeast of Baquba yesterday.He added that the security forces moved them to one of security detention centers to complete investigations.It is mentioned that security force found seven bodies of vehicles' drivers after they were abducted from their work site, northeast of Baquba.