A police spokesman said: "At around 8.00pm yesterday evening (17 June), officers were called to the scene of a multiple vehicle collision involving two cars and a bus, on Holyhead Road, Wellington. It was reported that a man in his 20s had been stabbed but had left at the scene.
"On attendance by police and West Midlands Ambulance Service, the man was transported to hospital by ambulance where he received treatment for his injuries.
Officers learned that the suspects fled from the scene of the collision, and we then received further reports of a disorder in Market Street, Wellington.
"On arrival, officers arrested three men, aged 20, 25 and 28-years-old, on suspicion of violent disorder. A 45-year-old man was also arrested on suspicion of attempted murder in the early hours of this morning (18 June).
All four men remain in police custody whilst enquiries are ongoing."
Detective Inspector Richard Davies said: "We'd like to reassure the communities of Wellington that we believe this to be an isolated incident, with no wider threat to the public. However, whilst our investigation is still ongoing, you will see an increased police presence on Market Street and the road will remain closed. We will update you when this is reopened.
"If anyone witnessed either the collision or the disorder, please get in contact with us via our website under the Tell us About page, or by dialling 101 quoting incident 586 i of 17 June."
Alternatively, if you have information but don’t feel comfortable speaking to police, you can speak to the independent charity Crimestoppers. It is 100% anonymous, they never ask your name and they cannot trace your call or IP address. You can contact them at www.crimestoppers-uk.org or 0800 555 111.
Statement from Supt Mo Lansdale to communities of Wellington
"Following two very serious but unrelated incidents in Wellington this weekend, I'd like to offer reassurance to the community that our investigating officers are dealing with the recent events with upmost severity and professionalism, to bring justice to those that have caused harm.
"I don't underestimate the impact that incidents such as these have on people and their loved ones, and I encourage anyone with any concerns to contact their local policing teams, whose contact details can be found on our website.
"You may see more police officers around Wellington and Telford over the weekend, they are there as part of our commitment to you, to be visible and accessible when you need them the most.
"I'd like to thank you for being understanding of the restrictions and road closures we have had to put in place, and for your continued support whilst our enquiries continue. We hope to remove all road closures as soon as possible and will update you when we can."
