Russian media also cited unconfirmed claims that overall casualties could have been as high as 200 and Russians could have accounted for the bulk of them. Russia's military said it had nothing to do with the attack and the US accepted the claim. The US is going along with that, although defense chief James Mattis called the entire situation "perplexing".
Kremlin spokesman Dmitry Peskov refrained from comment, saying on Tuesday that the reports needed to be verified.
Neither the Kremlin nor the Russian Ministry of Defense talks about private military contractors in Syria.
Ionov said not all those killed were Russian, and that some were from other parts of the former Soviet Union. "But Russia will pretend nothing happened".
PA A Challenger 2 tank passes a pair of Warrior tracked armoured vehicles
The mercenaries are said to have been hired by private military firms backing Syrian pro-government troops.
As the Islamic State's dominance in the region has been decimated, state actors have entered the fill the power vacuum.
Bloomberg has also identified the mercenary outfit involved in the attack.
The T-72 tank came from the "same hostile forces" which attacked US special operations troops and allied Syrian fighters last Wednesday in eastern Syria, officials said.
It also quoted Alexander Averin, leader of extreme leftist group Another Russia, as saying that one of its activists, Kirill Ananyev, was killed by the US strike near Khusham.
A flawless blend of Lent fasting and Valentine's Day
For the second year, the Episcopal Churches in the Mid-Hudson Valley will be bringing Ash Wednesday to the people. Ashes will also be distributed during a Mass at 9 a.m., a prayer service at 4:30 p.m., and a Mass at 6 p.m.
According to the above named reports, the Russian military were among Syrian forces targeted coalition of Hasama.
At no point, an American military spokesman said, was there any chance of direct conflict between United States and Russian forces. It also quoted Alexander Averin, the leader of extreme leftist group Another Russia, saying that one of its activists, Kirill Ananyev, was killed by the USA strike near Khusham, where the US said its counterattack occurred. "(...) You can't ask Russian Federation to prevent the conflict in the case when she is not in control, it could not be done", said Mattis.
"Coalition officials maintained regular contact with Russian counterparts via established de-confliction lines to avoid misperceptions and miscalculations that could endanger each other's forces", the statement added. The fighters had no air cover or mobile air defense to protect them during the fighting, they said.
Russian opposition politician Grigory Yavlinsky, urged Mr Putin to come clean to using mercenaries to defend Syrian president Bashar-al-Assad.
Russia plans to help Syria rebuild energy facilities that have been devastated by years of war, Russian Energy Minister Aleksandr Novak has said.
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All four Hendrick cars and all four Joe Gibbs Racing Toyotas made it into the group of 12 for the second round of qualifying. With Dale Jr. now in retirement, the sport will be looking for the new Pied Piper of restrictor plate race tracks.
The general pressed the points that US forces are focused on ISIS in Syria, they were not "looking for a fight", and the deadly strikes were ordered in self-defense.
The death toll from the skirmish, already about five times more than Russia's official losses in Syria, is still rising, according to one mercenary commander who said by phone that dozens of his wounded men are still being treated at military hospitals in St. Petersburg and Moscow.
The US Air Force Central Command released a video on Tuesday, showing an airstrike on Syrian government forces in the province of Deir ez-Zor.
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Furthermore, his infamously awful jump shot hasn't exactly caused Sixers fans to crave his return. His agent said on October 24 that Fultz was unable to lift his arms above his head to shoot.