Police arrested four teenagers involved in an argument outside a school.
Officers had been asked to patrol outside Wreake Valley Academy, in Syston, by staff following tensions earlier in the week between students from the school, and another in the county.
Four 15-year-old boys from the Syston area were arrested on Wednesday as part of an ongoing investigation. One of them was given a police caution and the other three were taken home and their parents spoken to.
It is not known which schools they attend.
Tony Pinnock, head of Wreake Valley Academy, said: "It appears as though a verbal altercation between one of our pupils and another at a different school has led to some tension.
"I'm in the process of contacting the head teacher at that school to discuss this.
"Unfortunately, due to the arrests – which were made as students left the school – a number of rumours have circulated and this appears to have been blown out of proportion.
"Nothing physical has happened and no weapons have been used.
"I have asked police to keep up their presence at the school to reassure parents and pupils that nothing is going to happen."
Inspector Tim McCabe, from Syston police station, said: "We are working closely with the school to address any concerns that may have been caused.
"We are also working with Charnwood Borough Council and other agencies to ensure that teenagers in the area are offered the right support."
