The incident took place around 10 PM at Karakri crossing when the private bus driver, identified as Mohammed Nazim was shot by one Punit Gupta (26).
Nazim was rushed to a nearby hospital, soon after the incident where his condition is said to be critical, they said.
According to police, Gupta was travelling in a car along with his four friends identified as Ankit, Pranab, Harsh and Yogi.
The argument soon turned into a scuffle during which Nazim first slapped one of Gupta's friends and then allegedly injured three others with a knife. Gupta then pulled out a pistol and shot Nazim following which they fled from the spot, he said.
Some passersby made a PCR call after which Ankit, Pranab and Harsh were arrested near Mayur Vihar following a chase. However, Gupta and Yogi managed to escape leaving the vehicle behind, police said.
