A man arrested at the visitors' entrance to Buckingham Palace for carrying a taser has been released after it was ruled the device was a low powered keyring and that he posed no threat.
The 38-year-old Dutch tourist was detained by security staff on Sunday on suspicion of possessing a firearm, namely a taser, and was taken into custody.
Scotland Yard said the man was later released without further action as officers were satisfied that the device, which was low-powered and part of a keyring, was a genuine error on his part, and that he posed no threat.
A spokesman said: "Officers are reminding visitors to the United Kingdom to ensure that any items that they are carrying comply with legislation in the UK.
"This includes small knives and personal Taser-type devices, both of which may be considered offensive weapons or in breach of strict UK firearms laws."
Australian Associated Press