Visitors to London Zoo have been locked inside attractions while armed police hunt a gorilla which has reportedly escaped from its enclosure.
A video, which has been filmed from inside a building and showing armed police walking around the zoo's grounds in Regent's park, is currently circulating on Twitter.
The Metropolitan Police arrived at the scene at 17:20, the BBC reported.
A ZSL London Zoo spokesperson told City A.M. that they were "managing an incident on site".
Locked in at London zoo due to an escaped gorilla or something, but the main problem is that I'm locked with a bunch of screaming children— Z𖤐Z (@ZEWZUW) October 13, 2016
Locked in London zoo because a gorilla is loose 🙄🙄— scarlette (@saintsatanx) October 13, 2016