Islamabad- At least seven youngsters were injured in firing over a minor dispute last night. The incident took place in Rawal Dam Colony in Secretariat police station jurisdiction where two groups of youths exchanged hot words over ownership of a mobile phone SIM. The verbal clash turned violent after which members of one group open fire at other injuring seven. The injured were shifted to Federal Government Services Hospital (Poly Clinic) for treatment. Some sources claimed that the incident took place after one group alleged member of other group for making bogus calls and SMS to a relative girl of first group member. Police have registered a case into the incident and started search for the attacker youths who managed to escape after committing the crime.