MURRAY, Utah - A Utah school district has issued a formal warning to the president of a soccer league where a referee was punched by a teen player and sent into a coma.

The Granite School District's letter says the league is in danger of having its rental agreement revoked. La Liga Continental pays to hold its games at a district middle school field each Saturday.

The district cites Saturday's assault and previous complaints that the league didn't clean up trash and violated the ban on drinking alcohol and smoking cigarettes.

Teachers say they recently found beer cans and other litter on the field following the games.

La Liga president Mario Vasquez said Friday the team that the teenager played on has been kicked out of the league. And he says the league will have security present at future games.

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