Spot gold was slightly down at $2,335.13 per gram on Monday
This "false information" was picked up by Azerbaijani and Iranian media, causing "major damage to the national security interests of Armenia", it said.
Pashinyan, who came to power after a 2018 revolution, himself denied on his Facebook page on Sunday that he had congratulated Trump.
He also urged the United States and Iran to exercise restraint while the foreign minister called his Iranian counterpart to express condolences over the assassination.
General Qasem Soleimani, Iran's top military commander, died in a US drone attack at Baghdad airport on Friday, raising tensions in the Middle East.
"Diana Arutyunyan" is the pseudonym for a man whose identity has not been revealed.
In a video released with the SNB statement, the man explained that he had created the Facebook page in 2018 to "write political publications" and admitted being the author of the article in question.
"I did it because I have political opinions and I believe that it is unjust to keep Robert Kocharyan in prison," he said in the video, referring to the former president who is being held for a "breach of constitutional order".
Spot gold was slightly down at $2,335.13 per gram on Monday
As authorities sprang into action to drain waterlogging, tenants and homeowners had to navigate the aftermath of nature's unpredictability
The 51-year-old recently competed in the Masters Indoor World Cup — his 10th international tournament since undergoing surgery
Met Department advised people to take precautions during strong convective cloud activity associated with rainfall over Eastern and Northern areas
Earlier, interest-free loans were announced for Emiratis whose businesses were affected by the rains, with a grace period of 6 to 12 months
Following a $3 per barrel average global price increase in March, petrol prices for April increased by 12 fils per litre in the UAE
Annual rents in Dubai are usually paid in two, four or six instalments via post-dated cheques