(This May 22 story corrects to show timing of release of funds to be distributed “by July,” not “later this week,” in paragraph six)

WASHINGTON (Reuters) - Senior Trump administration officials warned Congress on Tuesday of ongoing efforts by Russia to interfere in the 2018 midterm congressional elections as the federal government prepares to hand out $380 million in election security funding to states.

At a briefing attended by about 40 or 50 members of the 435-member U.S. House of Representatives, the heads of FBI, Homeland Security Department and the director of National Intelligence said states and cities overseeing elections need to be prepared for threats.

DHS Secretary Kirstjen Nielsen told reporters she agreed Russia was trying to influence the 2018 elections.

“We see them continuing to conduct foreign influence campaigns,” Nielsen said, but added there is no evidence of Russia targeting specific races.

Nielsen said DHS is watching other countries that have the capability to influence U.S. elections, including China and Iran. “We need to be prepared,” she said.

Chris Krebs, a senior DHS cybersecurity official, told Reuters that the administration was sending states guidance on how to spend the $380 million approved by Congress in March to help safeguard U.S. voting systems from cyber attacks. Nearly all of the funds are expected to be distributed by July, the Election Assistance Commission said.

DHS is assisting 48 states with election security. It handed out a chart at the briefing to members that said states need to have auditable systems, spend time on planning, training and drills and they should “consider investing in full system architecture reviews.”

Representative Michael McCaul, who chairs the House Homeland Security Committee, said after the briefing that members are concerned that “not only Russia but possibly other foreign adversaries are now going to start looking at how they can meddle in the midterm elections and we need to be prepared. We were caught off guard last time.”

U.S. intelligence agencies have concluded that Russian leadership at a very high level was involved in the attempt to interfere in the U.S. election in order to boost President Donald Trump’s candidacy.

Russia has denied interfering in U.S. elections.

U.S. Secretary of Homeland Security Kirstjen Nielsen speaks to reporters after she, FBI Director Christopher Wray and Director of National Intelligence Daniel Coats briefed members of the U.S. House of Representatives on election security at the U.S. Capitol in Washington, U.S., May 22, 2018. REUTERS/Leah Millis

Several Democrats after the briefing expressed concern that the federal government was not doing enough to safeguard elections.

“It is clear that our government must do more and whatever possible to secure our elections from foreign interference. The integrity of our democracy is at stake,” said Representative Bennie Thompson, the top Democrat on the Homeland Security Committee.

UNPRECEDENTED, COORDINATED

A May 8 U.S. Senate report said that in 2016 “cyber actors affiliated with the Russian Government conducted an unprecedented, coordinated cyber campaign against state election infrastructure.” Russian actors “scanned databases for vulnerabilities, attempted intrusions, and in a small number of cases successfully penetrated a voter registration database.”

The report said in a small number of states, “these cyber actors were in a position to, at a minimum, alter or delete voter registration data.”

Krebs said on Tuesday that DHS wanted states to “increase awareness” and have a “layered defense.”

If a voter’s information was missing, for example, they could request a provisional ballot. “If we do detect something, we can overcome it,” he said.

During the 2016 campaign, hackers stole emails from the personal account of Democratic candidate Hillary Clinton’s campaign chairman and from the Democratic National Committee, and they were used to embarrass Clinton.

Representative C.A. “Dutch” Ruppersberger, said members of Congress need to be aware of cyber risks. “We need to focus on it, make it a priority,” he said.

DHS said in March it is prioritizing election cyber security above all other critical infrastructure it protects.

The agency has said that 21 states had experienced initial probing of their systems from Russian hackers in 2016 and that a small number of networks were compromised, but that there remains no evidence any votes were actually altered.

Representative Adam Schiff, the top Democrat on the Intelligence Committee, told reporters the federal government should quickly alert states if they learn of election system hacking.

He also wants a "real-time communications channel" between the intelligence community and technology companies in order to assure that internet firms are notified if evidence emerges that Russia is creating fake Facebook Inc FB.O pages or taking other actions to influence the elections.