The owners of 28 vehicles that allegedly followed police vehicles transporting late gangster-turned-politician Atiq Ahmed's son Umar were booked on Sunday for breaking through a toll barrier and passing the Nawabganj toll plaza without paying the required fee, police said.

The FIR was registered at around 1.30 pm on the complaint of toll plaza assistant manager Jai Prakash Yadav. Police said the vehicles were identified based on their registration numbers and CCTV footage, and efforts are underway to identify their occupants and recover the unpaid toll.