"At the council meeting the responsible authorities conferred wide-ranging information about current events in Latvia's finance sector," said Vējonis.
"The state's financial system is stable. Necessary steps are being taken to take into account Latvians' interests and to adhere to Latvia's international finance obligations," he said.
"However several events during the past few days testify that, in the mid- and long-term we must continue bettering the banking and finance sector. We must continue fighting corruption and money laundering," he said.
"Guilty parties will be brought to justice, no matter what their position, status and influence," he said.
"It's important for security services to cooperate with US colleagues to obtain all the necessary information for further actions and investigations," he said.
Vējonis also called on the public not to "succumb to various conspiracy theories and unverified information" and from "disseminating rumors and different assumptions", without clarifying what they are or giving any guidelines as to what sources were to be trusted or not trusted.
"Let's let our services do their work," he concluded.
Vējonis also used the presser to confirm unanimous council support for Jānis Maizītis's repeat candidacy as the head of the Constitution Protection Bureau (SAB), asking the parliament to expedite this decision.
The announcement following the meeting lasted under five minutes, and no questions were allowed. The meeting came one day before Deputy Secretary of the State Department John J Sullivan is due to visit Latvia for meetings with senior figures including the President of Latvia, Raimonds Vējonis, and the Minister of Foreign Affairs, Edgars Rinkēvičs.
The council meeting was called by the president after the detention of central bank governor Ilmārs Rimšēvics, who is accused of seeking a large-scale bribe and is the subject of an international news controversy.
This is on top of the ABLV controversy that is seeing one of Latvia's largest banks scrambling for liquidity after serious allegations of money-laundering by U.S. authorities. ABLV bank payments have been suspended by the European Central Bank.
The National Security Council is a body that coordinates national policies at the highest level and is comprised of the state’s highest-ranking government authorities and officials.