Officers investigating the serious assaults of two 16-year-old boys in Widnes have arrested seven teenagers in Liverpool.
A series of dawn raids were carried out simultaneously in the city today, which resulted in the arrests of six 16-year-old boys and one 17-year-old.
They are all being held on suspicion of wounding with intent.
Detective Inspector Ian Whiley, of Widnes Local Policing Unit, said: "Although we have now made a series of arrests in connection with the stabbings, we are still appealing for information and footage from members of the public.
"If you were in the Kingsway area around the time of the incident and witnessed it, or anything else that may aid our investigation, please contact the team here at Widnes Police Station.
"We believe that passing motorists may have seen, and even have dashcam of, what happened.
"If you have any information, or dashcam or mobile phone footage, that may help us to establish exactly what happened and who was responsible please get in touch."
The two boys who were seriously assaulted are also from Liverpool.
They were both taken to hospital in ambulances and have since been discharged after receiving treatment for their puncture wounds.