The victim and those injured had come to attend the wedding ceremony where Sadhvi Deva Thakur and her accomplices started the shooting spree with their weapons. Several rounds were fired by them, said police, quoting eyewitnesses.
The victim, a 40 year old woman, identified as a relative of the groom, died when guards of sadhvi opened fire during a ring ceremony at a banquet lawn in the city on Tuesday.
Police booked the Hindu godwoman and her private securitymen for murder and other sections of the Indian Penal Code and the Arms Act following the shooting incident.
The incident took place on Tuesday at Savitrii Lawns marriage palace near the railway station in Karnal town, 140 km from here.
Karnal is also the assembly constituency of Haryana Chief Minister Manohar Lal Khattar who heads the BJP government in the state.
Police said that further investigations were in progress and raids were being conducted to nab the accused.
Police have recovered empty cartridges from the ring ceremony spot.