Collins is wanted by police (Picture: Met Police)
A woman has been arrested while police were investigating the Dalston acid attack.
Officers are still looking to speak with TV star’s Ferne McCann’s boyfriend in relation to the attack.
Arthur Collins is being pursued in relation to the corrosive liquid being sprayed during an argument at Mangle in London.
The 33-year-old woman who was arrested was at one of the properties police carried out three arrest warrants in the Hertfordshire area.
She has been arrested on suspicion of firearms offences and remains in custody.
Arthur Collins and TOWIE star Ferne McCann were planning a wedding (Picture: Instagram)
Police have warned that Collins, 25, should not approached and if seen the public are advised to call 999 immediately.
Two other men are also wanted for questioning in connection with this incident. CCTV images of the two males are currently being reviewed by investigators.
A total of 20 people have now been confirmed as suffering various burns.
But the police have stated that the attack, which has left a 22-year-old woman blind in her left eye, is not gang related.
Detective Inspector Lee McCullough, from Hackney CID leads the investigation. He said: ‘I am continuing to appeal to Arthur Collins to hand himself in so that we can talk to him about the incident in the nightclub. I would also urge anyone who knows of his whereabouts to contact police.
CCTV image 25-year-old Collins (Picture:PA)
‘We now have 20 people suffering from the effects of an acidic substance being sprayed in a confined space in a busy nightclub.
‘All have burn-related injuries.
‘The noxious substance used has not yet been confirmed but samples retrieved from the scene have been sent for analysis.
‘If you were there and saw anyone involved inside or leaving the nightclub, please get in touch.’