Hyderabad, Aug 28 : Angry over a late night party in an apartment building, a retired army jawan opened fire at a man following a heated argument. The incident occurred late on Thursday at Hydershahkote in Narsingi on the outskirts of Hyderabad. Retired army jawan Nagamalleswar Rao raised an objection to the party organised by employees of a company in the building as part of the Ganesh festival. There was a heated argument between Rao and those partying. In a fit of rage, Rao took out his revolver and opened fire aiming at a man. The bullet brushed past the man's arm. He allegedly fired two rounds, including one in the air. Police rushed to the scene and arrested the retired army jawan. A police officer said they registered a case and were investigating. According to the watchman and other residents of the building, employees of an Internet service provider had organised a party as part of Ganesh festival. They had installed an idol in the company's office and were partying in celebration. About 40 people participated in the party. As they were moving up and down by the lift and consuming liquor on the terrace, Nagamalleswar Rao got annoyed. He warned them not to consume liquor. The participants, however, continued leading to the argument and consecutive firing. /IANS