Ujjain : Tension prevailed here after violent clashes between two groups over the chopping of an old banyan tree near Siddhvat under Bhairavgarh police circle on Saturday. Parmanand Sharma and his son Anand were allegedly injured by Bhairushankar Chaturvedi and his son Surendra. The clash started after one party interfered in chopping of an old banyan tree in the area. A case was registered at Bhairavgarh police in this regard.