Mohali, April 18 -- Five days after rival groups turned the Dera Bassi civil hospital into a battleground, police have booked Udayveer Singh Dhillon, president of the Zirakpur Municipal Council, for allegedly instigating the clash.

According to police officials, video evidence has surfaced showing Udayveer allegedly directing his supporters to assault members of the rival group.

The violence, which broke out on April 13, is believed to have stemmed from an old rivalry related to last year's panchayat elections. Police have so far booked a total of 18 individuals in connection with the incident, including Udayveer.

The attempt to murder case was lodged on the complaint of Ranjit Singh, alias Minta, husband of village sarpanch Suman Devi...