Basheer Ahmed who ran a food stall in Mangaluru was attacked in Surathkal by four people on Wednesday.
Basheer was allegedly attacked in retaliation for the murder of Rao.
Police have arrested four people in connection with Basheer's murder.
Rao and Basheer were attacked on Wednesday, while Rao died the same day; Basheer succumbed to his injuries today.
It is alleged that Rao, a resident of Katipalla Kaikamba, was riding his motorbike when he was waylaid by a car whose individuals then attacked him.
Before Deepak could escape, they attacked him with weapons and fled in a car. He was later declared brought dead by doctors in a private hospital.
The state government has, however, deployed additional police to maintain law and order and ensure peace, as the BJP and Bajrang Dal called for a day-long shutdown in the coastal district today in protest against the murder. (ANI)