Armed officers have been called to Caerphilly Bus Station this evening following reports of a man with a weapon.
Police say a 22-year-old man was detained at the scene. No shots were fired and no members of the public were hurt.
The investigation is ongoing but police say they are not looking for anyone else in connection with this incident.
Any witnesses should contact Gwent Police on 101 quoting log number 420 of 25/07/2017.