WATERVILLE — Police this week issued warnings to about a dozen Waterville and Fairfield students for disorderly conduct and criminal trespass after the youths allegedly fought in a local cemetery, according to Deputy Police Chief Charles Rumsey.

Rumsey said Tuesday the students, ages 15-17 and mostly from Waterville Senior High School and Lawrence High School, planned the fight that occurred Friday at St. Francis Cemetery off Grove Street.

The fight was prompted by a dispute between a Waterville student and a Lawrence student on a social media website, then friends of those students got involved, Rumsey said.

He said several junior high school students were present at the fight and one filmed it and posted it on YouTube. The video showed students on a grassy area near gravestones squaring off in twos and punching and tackling each other. YouTube has removed the video.

No one was seriously injured and there was not damage to headstones, Rumsey said.

Waterville schools Superintendent Eric Haley said three or four athletes are being disciplined for violating the school’s athletic code of conduct by engaging in the fight. Other students will not be disciplined because the fight occurred after school hours and off school property.