Three-four men, dressed as women, were waiting for gangster Ramesh Lohar outside the Rohtak court complex and opened fire on him and his aides immediately after they arrived there, police said.
The attackers escaped on a motorcycle after the incident.
Six persons, including Lohar and a lawyer, were injured in the firing. They were rushed to PGIMS, Rohtak. The condition of one of them is stated to be critical, police said.