document: Officers were called to Derby Road, Enfield at 15:30 GMT on Saturday after reports of a gun being seen in a car.
  A Metropolitan Police spokesman said the reported car was stopped at 16:00 GMT and the four men inside were arrested.
  They are currently being held at a north London police station.
summary: Four men were arrested in north London when police found a gun, a sword and a knife in the car they were travelling in.