CISF constable Suresh Gaikwad, 28, a native of Maharashtra, committed suicide by shooting himself with his service rifle at 9 am, Deputy Commissioner of Police North East, Dr P S Harsha said.
Local media described the scene as "a mad house" and said that were gunshots reported as people were exiting the nightclub.
About 90 per cent of the workers at this delivery service facility are said to be Indian-Americans, mostly from the Sikh community.
Kumaraswamy found himself in a raging controversy on Tuesday after a video of his telephonic instruction to "shoot mercilessly" those who had killed a Janata Dal-Secular worker in the party's stronghold of Mandya district on Monday went viral.
As authorities investigate the rampant shooting incident at a movie hall during a showing of the new Batman movie, The Dark Knight Rises in Denver, Colorado, psychologists have said that James Holmes, one of the two masked gunmen, who stalked the aisles at the theatre with a rifle, may be delusional.
The suspect who was arrested was a 17-year-old pupil at the high-school.
The man, named as Micah Xavier Johnson, a 25-year-old Army reservist, was responsible for the deadliest attacks on law enforcers in America since 9/11 - shooting 12, killing 5.
The shooting was the deadliest day for US journalism since 9/11 terror attacks.
When asked by media about the incident, the BJP leader, who was returning from his village with the police said, "I fired in self-defence and for the security of my family."
A handwritten note in Punjabi, purportedly left behind by the deceased, says he was unable to bear the "pain of farmers".
On Sunday, Faisal Hussain, 29, opened fire in Toronto's vibrant Greektown neighbourhood, killing a 10-year-old girl and an 18-year-old woman. Thirteen people were also injured in the shooting, some with potentially life-altering injuries.
Terrorists on Saturday shot dead a policeman in Anantnag district of Jammu and Kashmir, police said, evoking condemnations from mainstream political parties in the Valley.
Witnesses told the local television station WWL that at least two gunmen were shooting into the crowd.
Seeking his custody, the police told the court that the mental health condition of the accused constable was yet to be conducted and that he was not cooperating with them.
Security personnel deployed outside the Transport Bhavan, metres away from the Parliament complex, did not allow anyone to go beyond the barricades they had put up before checking their identity cards and entry passes.
"The voting percentage is likely to go upwards when reports from all polling stations are obtained as polling is scheduled till 6 pm in many constituencies. Final figures will be known on Saturday after the scrutiny of form 17A," the EC said.