This is the shocking moment an acid attacker casually sprays a corrosive liquid into the face of his victim, leaving the man possibly blinded in one eye.
The attack happened in Old Street, east London earlier this month after the victim and his friend argued with the attacker when they declined his nitrous oxide.
They later saw the man again and, this time, he walked up to them and sprayed liquid from a bottle in his back pocket at the face of the victim.
The 26-year-old suffered burn injuries to his face in the attack and he may lose sight in one eye as a result of the attack.
Detectives say tests are continuing to ascertain the exact nature of the substance sprayed.