Police have booked gangster-turned-politician Atiq Ahmad, his wife Shaista Parveen and son Ali in a forgery case linked to the murder of Umesh Pal, the key witness in the murder case of BSP MLA Raju Pal.

The FIR was registered on Saturday at Dhoomanganj police station here in which two more persons -- Mohammad Sabir and Rakesh alias Nakesh alias Lala -- have been named, the Prayagraj police said in a statement.