Police on Thursday arrested four persons in connection with an attack on Shiv Sena office-bearer Nilesh alias Bala Kokane in Nashik city of Maharashtra, a senior official said.

Unidentified persons had attacked Kokane at around 10.45 pm on July 18 when he was on a two-wheeler in the MG Road area of the north Maharashtra city. They had assaulted the Sena leader with sharp and hard objects from behind, leaving him injured.