A man and five youths from the Scunthorpe area were arrested following reports of a group fighting in Crowle.
Police were called to Tesco, Crowle at shortly after 7pm on Friday, February 12, following reports of a disturbance near the main entrance of the store.
It is understood the incident began in an alleyway adjacent to the nearby church.
One of the 17-year-olds involved in the incident suffered cuts to his head and back.
Three 17-year-old boys and an 18-year-old man were subsequently arrested on suspicion of violent disorder and released on police bail to a date in March, pending further enquiries.
A 16-year-old boy and 17-year-old boy were also arrested on suspicion of violent disorder and causing Grievous Bodily Harm with intent. They have also been bailed to a date in March pending further enquiries.
Anyone with information about the incident is asked to call 101, quoting crime reference numbers 2169188 and 2169193 of February 12.