PANJGUR: All private schools have been closed in city following threats of attacks and closure. A shutter down was observed in the city today on the appeal of civil society and political parties. It may be recalled here that terrorists had hurled threats for closure of private schools and burnt vehicle of principal of a private schools in the city some time ago. All private schools have been closed on the appeal of Private Schools Association. All business centres and shops are closed on the appeal of civil society and different political parties.