Pope Francis condemns attack, calls it "senseless hatred"

In a statement, Lombardi said the Pope was shaken and saddened by the "homicidal folly and senseless hatred" of the attack.

"We all hope that ways may be found, as soon as possible, to effectively identify and contrast the causes of such terrible and absurd violence," the statement said.

A gunman armed with an assault rifle carried out the attack on Sunday at a packed gay nightclub in what is the worst mass shooting in U.S. history.