Two murals by street artist Banksy have appeared in central London.
The works, near the Barbican Centre, mark the opening of an exhibition by American artist Jean-Michel Basquiat.
The New York City graffiti artist, turned painter died aged 27 in 1988, of a suspected drug overdose.
On Instagram Banksy described the murals as an “(unofficial) collaboration”.
Alongside an image of the first work – a Ferris wheel – Banksy wrote on Instagram: “Major new Basquiat show opens at the Barbican – a place that is normally very keen to clean any graffiti from its walls.”
The second mural, which bears a likeness to Basquiat’s 1982 work Boy and Dog in a Johnnypump, is captioned: “Portrait of Basquiat being welcomed by the Metropolitan Police – an (unofficial) collaboration with the new Basquiat show.”
Basquiat: Boom for Real opens at the Barbican Centre on 20 September and is described by the Barbican as the “first large-scale exhibition in the UK of the work of the American artist”.