A head constable of the Chandigarh Police was shot dead inside his Sector 22 home on Friday, police said.
The deceased, identified as Nitin, was found dead at his residence. His son has been named as the prime accused in the case, Sector 17 police station SHO Sudesh Kumar said.
Sources said the father and son had an argument before the incident.
Further details are awaited. (with inputs from PTI)