On Monday, a large crowd of military observers and more than 100 journalists, including The Washington Post, were present at the exercises, along with President Vladimir Putin.
They also didn't reveal where or when the incident took place, and denied it took place during the ongoing war games.
The report said a C-8 rocket was sacked accidentally while the Ka-52 helicopter was traveling at 120 miles per hour at an altitude of 150 feet.
Paul Richardson catches game-winning TD with dislocated finger
It will be important for San Francisco to try to get into a quick rhythm in the passing game by getting the ball to Pierre Garcon. San Francisco got 98 rushing yards from Hyde in the second quarter alone to set up two Gould field goals that tied the score.
The incident occurred during the Zapad military drills, and the specific location of it is believed to be near St Petersburg.
"At least two cars burned down, two people were seriously injured, they are now hospitalized", the source said.
The military said the incident was caused by the failure of the helicopter's targeting system.
The ministry confirmed that a truck was damaged, although insisted that nobody was hurt.
Arsenal facing UEFA investigation for crowd chaos prior to Koln clash
Arsenal supporter and political editor of ITV, Robert Peston, tweeted before the game: "These Cologne fans are a disgrace". A statement said: "At around 3pm on Thursday, September 14 a large group of football fans gathered in Oxford Street".
A source told the website: "They flew to the target, there were 500 metres left, on the mission on the combat path, the weapons chains were switched on, they turned on, but there something was shortened, and the missiles descended".
The Defense Ministry denial cited September 18, a different day that the claimed incident in the NTV report. A video of eyewitnesses was published, where during the training there was an inefficient launch of air-to-surface missiles from KA-52 Alligator helicopter, which hit the equipment and people. The Zapad exercises, conducted jointly with Belarus, have discomforted Moscow's neighbors in the Baltic States and Poland who, following the Kremlin's invasion of Ukraine in 2014, see them as a threat.
"Indeed this year the president's schedule did not allow him to participate in the General Assembly session, and he does not take part every year".
Pakistan Violates Ceasefire for Third Consecutive Day; Border Security Force Officer Killed
Though no loss of civilian life has been reported, sources said at least one local was injured in the crossfire. A BSF jawan today attained martyrdom as Pakistan fired unprovoked on global border in Arnia sector of Jammu .