AN exchange of fire erupted Thursday between police and security guards of former district coordination officer of Dera Bugti, Abdul Samad Lassi. Following the incident, Lassi and his security guards have taken shelter in mountainous area near Hub city, reported the BBC Thursday, quoting police officials. As per details, a police team went to Dera Bugti to arrest Abdul Samad Lassi. Lassi's security guards opened indiscriminate fire on the team. Police also retaliated. However, no loss of life was reported in the incident.  The sources said that police hig- ups in Quetta had issued directives to arrest for DCO Dera Bugti, but police high ups didn't confirm this.    The reason of action against Lassi was also not disclosed.