The fake arms license case is tied to an application made by Ansari in June 1987 for a double-barrel gun license.
The application was made before the district magistrate at Ghazipur. However, Ansari was later said to have used forged signatures from both the DM and the Superintendent of Police to acquire the gun license.
Consequently, in 1990, a case was registered against him under the IPC and the Arms Act.
Source: Barandbench