Viquar Ahmed, an alleged terrorist, and his four associates were killed near Alair in Nalgonda district while being brought to a Hyderabad court from a prison in Warangal on April 7.
After hearing arguments by the defence counsel, the High Court asked Additional Advocate General whether police had registered a case on the complaint filed by Viquar's father Mohammed Ahmed.
Earlier, he had on April 11 lodged a complaint at Alair police station accusing the police of killing his son and others in a "fake encounter" and sought action against them.
The police had, however, only made a General Diary (GD) entry following the complaint.
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The petitioner's counsel Raghunath submitted before the court that the postmortem on the bodies was conducted in a "hasty manner" and sought court's direction for exhuming the bodies for a fresh autopsy.
AAG informed the court that a special investigation team has been set up for probing the incident.