* UEFA "disgusted" by violence in Marseille and stadium
* Russia under investigation after stadium violence
* More security will be deployed to separate fans (Adds interior ministry spokesman in paragraph 8)
PARIS/MARSEILLE, France, June 12 (Reuters) - European soccer's governing body warned the English and Russian soccer associations on Sunday their teams could be disqualified from Euro 2016 if there was more of the fan violence that has injured several dozen people.
UEFA's threat came after it began disciplinary proceedings against the Russian federation on Sunday following ugly scenes inside Marseille's Stade Velodrome stadium at the end of Saturday's match between England and Russia.