Sen. Bernie Sanders Bernie SandersKenosha will be a good bellwether in 2020 Biden's fiscal program: What is the likely market impact? McConnell accuses Democrats of sowing division by 'downplaying progress' on election security MORE (I-Vt.) on Monday urged Congress to take action in the aftermath of the deadly mass shooting in Las Vegas.

The Vermont senator in a statement said his thoughts are with the family and friends of the victims.

Sanders also thanked the first responders, who he said "did an outstanding job responding to this tragedy, saving many lives."

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"Last night's attack is the deadliest mass shooting in our country's modern history, and this year there have been more mass shootings than days in the year," Sanders said.

"In light of the terrible tragedy in Las Vegas and mass shootings across the country, it should be clear to all that we have got to do everything we can to stop guns from falling into the hands of people who should not have them," he continued.

He added: "It is long past time for Congress to take action on gun safety to save innocent lives."

At least 58 people were killed and hundreds more were injured after a gunman opened fire on a country music festival in Las Vegas.

The suspected gunman was identified as Stephen Paddock, a Nevada resident.

The FBI said Monday the deadly mass shooting had no connection to an international terrorist group.

Several lawmakers have since called for tougher gun restrictions.

Former Vice President Joe Biden tweeted that “there’s no excuse for inaction.” Sen. Richard Blumenthal (D-Conn.) said he’s “furious” that Congress “refuses to act,” and Sen. Chris Murphy (D-Conn.) urged Congress to “get off its ass and do something.”