FBI Special Agent Aaron Rouse disputed the Islamic State’s claim of a Sunday night shooting at a country music concert in Las Vegas.
“We have determine to this point no connection with an international terrorist group,” Rouse said during a Monday press conference.
Isis has claimed responsibility for the shooting attack that has left at least 50 dead in Las Vegas.
A statement published by the group’s Amaq propaganda agency claimed the attacker was a “soldier of the Islamic State”.
In a second statement, Isis claimed the gunman “converted to Islam several months ago”.
The wording of the release is similar to other attacks that have been inspired, rather than directed, by Isis.
President Donald Trump used a solemn address from the White House on Monday to call for unity in the aftermath of the deadliest mass shooting in modern US history, calling the massacre an “act of pure evil.”
In a subdued statement, Trump said the nation was united “in sadness, shock and grief.”
“We cannot fathom their pain, we cannot imagine their loss,” Trump said of those who lost loved ones in the massacre.