Police have arrested a 20-year-old man who handed himself into after 'pepper spray' was let off in a Pizza Hut, Tesco and McDonald's last night leaving customers and staff 'gasping for air,' and 15 people needing medical treatment.
Hazmat crews had to be called into all three premises in Upper Gornal, Dudley, at around 7pm last night.
One person was rushed to hospital with breathing difficulties, while 14 more were treated by paramedics at the scene.
This afternoon West Midlands Police announced a 20-year-old man had handed himself into Brierley Hill Police Station in connection with the incident.
Fire crews responding to the chemical incident outside a branch of Pizza Hut in Upper Gornal, West Midlands. The attack left 15 people fighting for breath, with one taken to hospital. A 20-year-old man is now being questioned in connection with the incident
In a statement, the force said: 'A man has handed himself into police at Brierley Hill police station today after a noxious substance was sprayed in three business premises in Upper Gornal, Dudley last night.
'Following fast-track CCTV enquiries, detectives made several attempts to locate a suspect and the 20-year-old is currently in custody for questioning.'
A worker from the takeaway Pizza Hut outlet described how he felt sick and unable to breathe after the attack.
The man, who asked not to be named, said: 'There were three of us working in here with one customer waiting when this man walked in. He just started spraying this substance out of a small plastic bottle.
'It didn't smell or produce a cloud, but after a minute we started reacting to it by coughing and he just walked off. I think he was waiting to see a reaction.
'I felt like I could not breathe. I came outside and thought I was going to be sick.'
It is believed the attacker first sprayed a nearby McDonald's restaurant before hitting the Pizza Hut and then a nearby Tesco Express.
A passer-by, who witnessed the scene shortly after 7pm on Tuesday night, said: 'There were lots of police cars and a couple of ambulances. It looked like a very big deal, as if the Novichok poisonings had come to the Black Country.
'There were 14 people affected and they all got taken