Why was Duniya Vijay arrested?

Last weekend saw Sandalwood actor-producer Duniya Vijay being arrested along with three others for the alleged assault of Maruthi Gowda, a body builder. Incidentally, Maruthi is the nephew of Pani Puri Kitty, who happened to be a friend-turned-foe of the Kannada actor.
As per different sources, the reason for Maruthi's alleged assault is the feud between Kitty and Vijay.“The unfortunate tragedy on the set of Maasthi Gudi that led to the death of two actors was the trigger for Kitty to distance himself from Vijay,” says a source, adding, “The two have since not been in touch, despite being thick friends once. Vijay had even approached Kitty recently to help him with his fitness routine, but to no avail. Given how Maruthi was a young aspirant in body building with hopes of a good future, the bunch seems to have attacked him when they found him alone on Saturday.” While both the parties haven't given any official statements yet, this personal feud surely seemed to have grabbed attention in the city on Sunday.