The Delhi Police have arrested a gangster for allegedly shooting at his uncle for verbally abusing his mother in Panipat, officers said on Sunday. A senior police officer said Constable Surender of the Crime Branch had received a tip-off about the movement of a gangster named Rajan alias Mantri, who was the main accused and wanted in an attempt to murder case at the Sanoli police station in Panipat. Deputy Commissioner of Police (Crime) Satish Kumar said, “The police source also informed us that the accused, Rajan alias Mantri, was…